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    #1

    Cannot call <isomorphic:loadISC skin="Tahoe"/> in index.jsp

    Hi,
    I'm following your hello-world example in the starting guide, and I cannot load the ISC package by calling <isomorphic:loadISC skin="Tahoe"/> in the index.jsp file
    The only way I can load it is by directly calling the corresponding js-files by using the HTML-version instead of jsp.
    I'm using SmartClient 13.0 from 2023-02-23, Java version 19. I've tried with the browsers Chrome and Edge.

    The index.jsp looks like this

    <%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <%@ taglib uri="http://www.smartclient.com/taglib" prefix="isomorphic" %>
    <HTML>
    <HEAD>
    <isomorphic:loadISC skin="Tahoe"/>
    </HEAD>
    <BODY>
    <SCRIPT>
    console.log('loaded');
    </SCRIPT>
    </BODY>
    </HTML>

    If I remove the row <isomorphic:loadISC skin="Tahoe"/> then it works perfectly, but the reason to use this <isomorphic:loadISC skin="Tahoe"/> is to be able to load datasources from ds.xml-files.

    The web.xml and server.properties are just copied from your example files in the downloaded packages
    It doesn't matter if I change skin, the result is the same.

    Any idea what can be wrong?

    The console output looks like this
    $ mvn spring-boot:run
    [INFO] Scanning for projects...
    [INFO]
    [INFO] --------------------------< the_project >---------------------------
    [INFO] Building Spring Boot Web JSP Sample 2.6.7
    [INFO] from pom.xml
    [INFO] --------------------------------[ war ]---------------------------------
    [INFO]
    [INFO] >>> spring-boot:2.6.7:run (default-cli) > test-compile @ proj_name >>>
    [INFO]
    [INFO] --- resources:3.2.0:resources (default-resources) @ proj_name ---
    [INFO] Using 'UTF-8' encoding to copy filtered resources.
    [INFO] Using 'UTF-8' encoding to copy filtered properties files.
    [INFO] Copying 1 resource
    [INFO] Copying 3 resources
    [INFO]
    [INFO] --- compiler:3.8.1:compile (default-compile) @ proj_name ---
    [INFO] Nothing to compile - all classes are up to date
    [INFO]
    [INFO] --- resources:3.2.0:testResources (default-testResources) @ proj_name ---
    [INFO] Using 'UTF-8' encoding to copy filtered resources.
    [INFO] Using 'UTF-8' encoding to copy filtered properties files.
    [INFO] skip non existing resourceDirectory c:\project_dir\src\test\resources
    [INFO]
    [INFO] --- compiler:3.8.1:testCompile (default-testCompile) @ proj_name ---
    [INFO] Nothing to compile - all classes are up to date
    [INFO]
    [INFO] <<< spring-boot:2.6.7:run (default-cli) < test-compile @ proj_name <<<
    [INFO]
    [INFO]
    [INFO] --- spring-boot:2.6.7:run (default-cli) @ proj_name ---
    [INFO] Attaching agents: []

    . ____ _ __ _ _
    /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
    ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
    \\/ ___)| |_)| | | | | || (_| | ) ) ) )
    ' |____| .__|_| |_|_| |_\__, | / / / /
    =========|_|==============|___/=/_/_/_/
    :: Spring Boot :: (v2.6.7)

    2023-03-15 04:35:52.156 INFO 32296 --- [ main] the_project.Application : Starting Application using Java 19.0.2 on xxx with PID 32296 (c:\project_dir\target\classes started by the_user in c:\project_dir)
    2023-03-15 04:35:52.158 INFO 32296 --- [ main] the_project.Application : No active profile set, falling back to 1 default profile: "default"
    2023-03-15 04:35:52.714 INFO 32296 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
    2023-03-15 04:35:52.721 INFO 32296 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
    2023-03-15 04:35:52.721 INFO 32296 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.62]
    2023-03-15 04:35:53.046 INFO 32296 --- [ main] org.apache.jasper.servlet.TldScanner : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
    2023-03-15 04:35:53.062 INFO 32296 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
    2023-03-15 04:35:53.062 INFO 32296 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 872 ms
    2023-03-15 04:35:53.242 INFO 32296 --- [ main] o.s.b.a.w.s.WelcomePageHandlerMapping : Adding welcome page template: index
    2023-03-15 04:35:53.301 INFO 32296 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
    2023-03-15 04:35:53.307 INFO 32296 --- [ main] the_project.Application : Started Application in 1.411 seconds (JVM running for 1.666)
    2023-03-15 04:36:28.155 INFO 32296 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
    2023-03-15 04:36:28.155 INFO 32296 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
    2023-03-15 04:36:28.156 INFO 32296 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 1 ms
    ISC: Configuring log4j from: file:/C:/project_dir/target/classes/log4j.isc.config.xml
    log4j:WARN No such property [encoding] in com.isomorphic.log.RevolvingMemoryAppender.
    === 2023-03-15 04:36:28,651 [ec-1] INFO ISCInit - Isomorphic SmartClient/SmartGWT Framework - Initializing
    === 2023-03-15 04:36:28,662 [ec-1] INFO ConfigLoader - Attempting to load framework.properties from CLASSPATH
    === 2023-03-15 04:36:28,705 [ec-1] INFO ConfigLoader - Successfully loaded framework.properties from CLASSPATH at location: file:/C:/project_dir/target/classes/framework.properties
    === 2023-03-15 04:36:28,705 [ec-1] INFO ConfigLoader - Attempting to load project.properties from CLASSPATH
    === 2023-03-15 04:36:28,705 [ec-1] INFO ConfigLoader - Unable to locate project.properties in CLASSPATH
    === 2023-03-15 04:36:28,705 [ec-1] INFO ConfigLoader - Attempting to load server.properties from CLASSPATH
    === 2023-03-15 04:36:28,708 [ec-1] INFO ConfigLoader - Successfully loaded server.properties from CLASSPATH at location: file:/C:/project_dir/target/classes/server.properties
    === 2023-03-15 04:36:28,710 [ec-1] INFO Logger - Logging system started.
    === 2023-03-15 04:36:28,711 [ec-1] INFO ISCInit - SQL JNDI publishing disabled
    Isomorphic Init: Exception in Init.go()
    java.lang.NullPointerException
    at java.base/java.io.File.<init>(File.java:278)
    at com.isomorphic.base.ISCInit.verifyWebRoot(ISCInit.java:330)
    at com.isomorphic.base.ISCInit.go(ISCInit.java:144)
    at com.isomorphic.base.Init.go(Init.java:92)
    at com.isomorphic.taglib.BaseTag.init(BaseTag.java:64)
    at com.isomorphic.taglib.LoadTag.init(LoadTag.java:231)
    at com.isomorphic.taglib.LoadISCTag.doStartTag(LoadISCTag.java:39)
    at org.apache.jsp.WEB_002dINF.jsp.index_jsp._jspx_meth_isomorphic_005floadISC_005f0(index_jsp.java:173)
    at org.apache.jsp.WEB_002dINF.jsp.index_jsp._jspService(index_jsp.java:132)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:711)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:385)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:313)
    at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:171)
    at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316)
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1401)
    at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1145)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1084)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:655)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1743)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
    at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.base/java.lang.Thread.run(Thread.java:1589)
    2023-03-15 04:36:28.716 ERROR 32296 --- [nio-8080-exec-1] o.a.c.c.C.[.[localhost].[/].[jsp] : Servlet.service() for servlet [jsp] threw exception

    java.lang.NullPointerException: Cannot invoke "String.endsWith(String)" because "this.isomorphicURI" is null
    at com.isomorphic.taglib.LoadTag.getIsomorphicURI(LoadTag.java:160) ~[isomorphic_core_rpc.jar:na]
    at com.isomorphic.taglib.LoadTag.init(LoadTag.java:235) ~[isomorphic_core_rpc.jar:na]
    at com.isomorphic.taglib.LoadISCTag.doStartTag(LoadISCTag.java:39) ~[isomorphic_core_rpc.jar:na]
    at org.apache.jsp.WEB_002dINF.jsp.index_jsp._jspx_meth_isomorphic_005floadISC_005f0(index_jsp.java:173) ~[na:na]
    at org.apache.jsp.WEB_002dINF.jsp.index_jsp._jspService(index_jsp.java:132) ~[na:na]
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111) ~[spring-web-5.3.19.jar:5.3.19]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111) ~[spring-web-5.3.19.jar:5.3.19]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111) ~[spring-web-5.3.19.jar:5.3.19]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:711) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:385) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:313) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:171) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1401) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1145) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1084) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.19.jar:5.3.19]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.19.jar:5.3.19]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.19.jar:5.3.19]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1743) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at java.base/java.lang.Thread.run(Thread.java:1589) ~[na:na]

    2023-03-15 04:36:28.717 ERROR 32296 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [java.lang.NullPointerException: Cannot invoke "String.endsWith(String)" because "this.isomorphicURI" is null] with root cause

    java.lang.NullPointerException: Cannot invoke "String.endsWith(String)" because "this.isomorphicURI" is null
    at com.isomorphic.taglib.LoadTag.getIsomorphicURI(LoadTag.java:160) ~[isomorphic_core_rpc.jar:na]
    at com.isomorphic.taglib.LoadTag.init(LoadTag.java:235) ~[isomorphic_core_rpc.jar:na]
    at com.isomorphic.taglib.LoadISCTag.doStartTag(LoadISCTag.java:39) ~[isomorphic_core_rpc.jar:na]
    at org.apache.jsp.WEB_002dINF.jsp.index_jsp._jspx_meth_isomorphic_005floadISC_005f0(index_jsp.java:173) ~[na:na]
    at org.apache.jsp.WEB_002dINF.jsp.index_jsp._jspService(index_jsp.java:132) ~[na:na]
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111) ~[spring-web-5.3.19.jar:5.3.19]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111) ~[spring-web-5.3.19.jar:5.3.19]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111) ~[spring-web-5.3.19.jar:5.3.19]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:711) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:385) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:313) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:171) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1401) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1145) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1084) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.19.jar:5.3.19]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.19.jar:5.3.19]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.19.jar:5.3.19]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1743) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at java.base/java.lang.Thread.run(Thread.java:1589) ~[na:na]
    Tags: None
    #2
    That's a "should be impossible" exception. We'll check it out, but we would recommend backing off to a normal version of Java, either 14 or 11.

    Comment

      #3
      Hi,
      When I switched to Java 11 I got the following message

      $ mvn spring-boot:run
      [INFO] Scanning for projects...
      [INFO]
      [INFO] --------------------------< proj_name >---------------------------
      [INFO] Building Spring Boot Web JSP Sample 2.6.7
      [INFO] from pom.xml
      [INFO] --------------------------------[ war ]---------------------------------
      [INFO]
      [INFO] >>> spring-boot:2.6.7:run (default-cli) > test-compile @ gui >>>
      [INFO]
      [INFO] --- resources:3.2.0:resources (default-resources) @ gui ---
      [INFO] Using 'UTF-8' encoding to copy filtered resources.
      [INFO] Using 'UTF-8' encoding to copy filtered properties files.
      [INFO] Copying 1 resource
      [INFO] Copying 3 resources
      [INFO]
      [INFO] --- compiler:3.8.1:compile (default-compile) @ gui ---
      [INFO] Changes detected - recompiling the module!
      [INFO] Compiling 2 source files to C:\proj_dir\target\classes
      [INFO]
      [INFO] --- resources:3.2.0:testResources (default-testResources) @ gui ---
      [INFO] Using 'UTF-8' encoding to copy filtered resources.
      [INFO] Using 'UTF-8' encoding to copy filtered properties files.
      [INFO] skip non existing resourceDirectory C:\proj_dir\src\test\resources
      [INFO]
      [INFO] --- compiler:3.8.1:testCompile (default-testCompile) @ gui ---
      [INFO] No sources to compile
      [INFO]
      [INFO] <<< spring-boot:2.6.7:run (default-cli) < test-compile @ gui <<<
      [INFO]
      [INFO]
      [INFO] --- spring-boot:2.6.7:run (default-cli) @ gui ---
      [INFO] Attaching agents: []

      . ____ _ __ _ _
      /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
      ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
      \\/ ___)| |_)| | | | | || (_| | ) ) ) )
      ' |____| .__|_| |_|_| |_\__, | / / / /
      =========|_|==============|___/=/_/_/_/
      :: Spring Boot :: (v2.6.7)

      2023-03-15 22:12:41.958 INFO 21720 --- [ main] proj_name.Application : Starting Application using Java 11.0.1 on xxx with PID 21720 (C:\proj_dir\target\classes started by the_user in C:\proj_dir)
      2023-03-15 22:12:41.960 INFO 21720 --- [ main] proj_name.Application : No active profile set, falling back to 1 default profile: "default"
      2023-03-15 22:12:42.616 INFO 21720 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
      2023-03-15 22:12:42.622 INFO 21720 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
      2023-03-15 22:12:42.622 INFO 21720 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.62]
      2023-03-15 22:12:42.801 INFO 21720 --- [ main] org.apache.jasper.servlet.TldScanner : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
      2023-03-15 22:12:42.812 INFO 21720 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
      2023-03-15 22:12:42.812 INFO 21720 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 820 ms
      2023-03-15 22:12:42.931 INFO 21720 --- [ main] o.s.b.a.w.s.WelcomePageHandlerMapping : Adding welcome page template: index
      2023-03-15 22:12:42.978 INFO 21720 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
      2023-03-15 22:12:42.986 INFO 21720 --- [ main] proj_name.Application : Started Application in 1.328 seconds (JVM running for 1.565)
      2023-03-15 22:12:55.612 INFO 21720 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
      2023-03-15 22:12:55.613 INFO 21720 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
      2023-03-15 22:12:55.613 INFO 21720 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 0 ms
      2023-03-15 22:12:56.123 WARN 21720 --- [nio-8080-exec-1] o.a.c.util.SessionIdGeneratorBase : Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [189] milliseconds.
      ISC: Configuring log4j from: file:/C:/proj_dir/target/classes/log4j.isc.config.xml
      log4j:WARN No such property [encoding] in com.isomorphic.log.RevolvingMemoryAppender.
      === 2023-03-15 22:12:56,185 [ec-1] INFO ISCInit - Isomorphic SmartClient/SmartGWT Framework - Initializing
      === 2023-03-15 22:12:56,197 [ec-1] INFO ConfigLoader - Attempting to load framework.properties from CLASSPATH
      === 2023-03-15 22:12:56,225 [ec-1] INFO ConfigLoader - Successfully loaded framework.properties from CLASSPATH at location: file:/C:/proj_dir/target/classes/framework.properties
      === 2023-03-15 22:12:56,225 [ec-1] INFO ConfigLoader - Attempting to load project.properties from CLASSPATH
      === 2023-03-15 22:12:56,226 [ec-1] INFO ConfigLoader - Unable to locate project.properties in CLASSPATH
      === 2023-03-15 22:12:56,226 [ec-1] INFO ConfigLoader - Attempting to load server.properties from CLASSPATH
      === 2023-03-15 22:12:56,227 [ec-1] INFO ConfigLoader - Successfully loaded server.properties from CLASSPATH at location: file:/C:/proj_dir/target/classes/server.properties
      === 2023-03-15 22:12:56,229 [ec-1] INFO Logger - Logging system started.
      === 2023-03-15 22:12:56,229 [ec-1] INFO ISCInit - SQL JNDI publishing disabled
      Isomorphic Init: Exception in Init.go()
      java.lang.NullPointerException
      at java.base/java.io.File.<init>(File.java:276)
      at com.isomorphic.base.ISCInit.verifyWebRoot(ISCInit.java:330)
      at com.isomorphic.base.ISCInit.go(ISCInit.java:144)
      at com.isomorphic.base.Init.go(Init.java:92)
      at com.isomorphic.taglib.BaseTag.init(BaseTag.java:64)
      at com.isomorphic.taglib.LoadTag.init(LoadTag.java:231)
      at com.isomorphic.taglib.LoadISCTag.doStartTag(LoadISCTag.java:39)
      at org.apache.jsp.WEB_002dINF.jsp.index_jsp._jspx_meth_isomorphic_005floadISC_005f0(index_jsp.java:172)
      at org.apache.jsp.WEB_002dINF.jsp.index_jsp._jspService(index_jsp.java:131)
      at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
      at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)
      at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)
      at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
      at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
      at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:711)
      at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459)
      at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:385)
      at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:313)
      at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:171)
      at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316)
      at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1401)
      at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1145)
      at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1084)
      at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963)
      at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
      at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:655)
      at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
      at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
      at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
      at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
      at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
      at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)
      at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
      at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
      at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890)
      at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1743)
      at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
      at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
      at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
      at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
      at java.base/java.lang.Thread.run(Thread.java:834)
      2023-03-15 22:12:56.237 ERROR 21720 --- [nio-8080-exec-1] o.a.c.c.C.[.[localhost].[/].[jsp] : Servlet.service() for servlet [jsp] threw exception

      java.lang.NullPointerException: null
      at com.isomorphic.taglib.LoadTag.getIsomorphicURI(LoadTag.java:160) ~[isomorphic_core_rpc.jar:na]
      at com.isomorphic.taglib.LoadTag.init(LoadTag.java:235) ~[isomorphic_core_rpc.jar:na]
      at com.isomorphic.taglib.LoadISCTag.doStartTag(LoadISCTag.java:39) ~[isomorphic_core_rpc.jar:na]
      at org.apache.jsp.WEB_002dINF.jsp.index_jsp._jspx_meth_isomorphic_005floadISC_005f0(index_jsp.java:172) ~[na:na]
      at org.apache.jsp.WEB_002dINF.jsp.index_jsp._jspService(index_jsp.java:131) ~[na:na]
      at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
      at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
      at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
      at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111) ~[spring-web-5.3.19.jar:5.3.19]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111) ~[spring-web-5.3.19.jar:5.3.19]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111) ~[spring-web-5.3.19.jar:5.3.19]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:711) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:385) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:313) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:171) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1401) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1145) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1084) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
      at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.19.jar:5.3.19]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.19.jar:5.3.19]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.19.jar:5.3.19]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1743) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]

      2023-03-15 22:12:56.239 ERROR 21720 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [java.lang.NullPointerException] with root cause

      java.lang.NullPointerException: null
      at com.isomorphic.taglib.LoadTag.getIsomorphicURI(LoadTag.java:160) ~[isomorphic_core_rpc.jar:na]
      at com.isomorphic.taglib.LoadTag.init(LoadTag.java:235) ~[isomorphic_core_rpc.jar:na]
      at com.isomorphic.taglib.LoadISCTag.doStartTag(LoadISCTag.java:39) ~[isomorphic_core_rpc.jar:na]
      at org.apache.jsp.WEB_002dINF.jsp.index_jsp._jspx_meth_isomorphic_005floadISC_005f0(index_jsp.java:172) ~[na:na]
      at org.apache.jsp.WEB_002dINF.jsp.index_jsp._jspService(index_jsp.java:131) ~[na:na]
      at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
      at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
      at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
      at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327) ~[tomcat-embed-jasper-9.0.62.jar:9.0.62]
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111) ~[spring-web-5.3.19.jar:5.3.19]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111) ~[spring-web-5.3.19.jar:5.3.19]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:111) ~[spring-web-5.3.19.jar:5.3.19]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:711) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:385) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:313) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:171) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1401) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1145) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1084) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
      at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.19.jar:5.3.19]
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.19.jar:5.3.19]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.19.jar:5.3.19]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.19.jar:5.3.19]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1743) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
      at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]

      Comment

        #4
        And the same thing with Java 14

        Comment

          #5
          OK, that is bizarre. Is there something special about this deployment which might plausible cause all core Java filesystem operations to just blow up? Is this something like a diskless server or cloud deployment?

          Regardless, look in server.properties - it seems like you should explicitly configure this installation to use Container IO. If you do that, the framework will not even try to use the (apparently completely broken) filesystem APIs.

          Comment

            #6
            src/main/resources/server.properties looks like this:

            project.datasources: $webRoot/shared/ds
            project.project: $webRoot/shared/ui
            project.ui: $webRoot/shared/ui
            project.apps: $webRoot/shared/app

            The environment itself is a normal Windows 11 computer. No special to my knowledge. I'm running it on OpenJDK. Or does it need to be Oracle JDK?

            Comment

              #7
              Quite possibly you should try an Oracle JDK. But you've already mentioned these settings (on your other thread) and again you need to look at the webroot setting. There are comments in the file about Container IO mode - follow those.

              Comment

                #8
                Can you please tell me exactly which file it is in? There are quite many files in this product...

                Comment

                  #9
                  Sorry, we didn't mention a file because it's in the same file you just showed us parts of, that is, server.properties.

                  Take a look at the big section discussing webroot. As mentioned, you want the ContainerIO mode, configured via __USE_CONTAINER__.

                  As we covered, this will prevent the framework from even attempting to use Java's filesystem APIs, which appear to be utterly non-functional in your environment.

                  Comment

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