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**Isomorphic** · 23 Jun 2021, 11:17

From the stack trace, this appears to have something to do with grouping, and specifically, it seems like internal state tracking grouping may have become inconsistent.

As a first step, it always makes sense to re-test with the latest patched build.

Aside from that, we would recommend looking at all your calls that configure grouping and/or supply data. You are looking for something like:

grouping and then grouping again (or ungrouping) before the original grouping has completed
kicking off a group or ungroup and then assigning to data, wiping cache, or changing criteria while the grouping is still happening

We have various guards in the framework code against these kinds of possibilities, but since you're seeing a crash, clearly you've found a way around them (at least in older builds!).

**survivor1505** · 2 Jul 2021, 08:38

I am still investigating any sign of grouping/ungrouping as you suggested.

And also tried out the recent build for 12.1 version from 06-25-2021. With the recent build, the RangeError Exception is still there and in addition I am seeing one more critical javaScriptException ( TypeError : Cannot read property 'canFocus' of undefined. ) on clicking on any widget that pops up a window in our web app. The exception seems to come from the showNextTo() api call. I am attaching the stack trace from the debugger with this post.

This JavaScriptException is only showing up with the recent build ( 12.1.2021-06-25 ) and not in the older 12.1 build ( 12.1.2020-07-31 ). We are trying to upgrade our apps with the latest builds but need to clear these exceptions.

The stack trace :

ISC_Core.js?sgwt_version_date=6_25_2021:29626 *12:20:01.339:MUP2:WARN:Log:com.google.gwt.core.client.JavaScriptException: (TypeError) : Cannot read property 'canFocus' of undefined
at calculateTabIndex(http://10.75.224.44:50055/beer/sc/mo..._2021@22:43398)
at getTabIndex(http://10.75.224.44:50055/beer/sc/mo..._2021@10:43325)
at getTabIndex(http://10.75.224.44:50055/beer/sc/mo..._2021@45:88278)
at autoTabIndexUpdated(http://10.75.224.44:50055/beer/sc/mo..._2021@32:87922)
at fireCallback(http://10.75.224.44:50055/beer/sc/mo...5_2021@36:7451)
at moveTargets(http://10.75.224.44:50055/beer/sc/mo..._2021@18:43168)
at _updateChildTabPositionsForDraw(http://10.75.224.44:50055/beer/sc/mo..._2021@25:88019)
at updateChildTabPositions(http://10.75.224.44:50055/beer/sc/mo..._2021@10:87998)
at drawChildren(http://10.75.224.44:50055/beer/sc/mo...5_2021@14:6405)
at draw(http://10.75.224.44:50055/beer/sc/mo..._2021@14:71686)
at layoutChildren(http://10.75.224.44:50055/beer/sc/mo...5_2021@20:7625)
at drawChildren(http://10.75.224.44:50055/beer/sc/mo...5_2021@14:6413)
at draw(http://10.75.224.44:50055/beer/sc/mo..._2021@14:71686)
at animateShow(http://10.75.224.44:50055/beer/sc/mo...5_2021@22:1190)
at showNextTo(http://10.75.224.44:50055/beer/sc/mo..._2021@14:81715)
at nv_g$(beer-0.js@13:14770)
at Jfe_g$(beer-0.js@32:107523)
at tpe_g$(beer-0.js@47:113247)
at nxo_g$(beer-0.js@16:304669)
at mxo_g$(beer-0.js@8:304657)
at dqj_g$(beer-0.js@8:205112)
at vBj_g$(beer-0.js@14:205906)
at GBj_g$(beer-0.js@9:206004)
at MBj_g$(beer-0.js@8:206077)
at nBj_g$(beer-0.js@24:205855)
at Hc_g$(beer-0.js@30:4528)
at anonymous(beer-0.js@16:13380)
at m0h_g$(beer-0.js@28:200794)
at p0h_g$(beer-0.js@16:200850)
at anonymous(beer-0.js@14:200830)
at Bu_g$.obj_0_g$.click(beer-0.js@22:13405)
at handleActivate(http://10.75.224.44:50055/beer/sc/mo...5_2021@33:4712)
at handleClick(http://10.75.224.44:50055/beer/sc/mo...5_2021@17:4737)
at bubbleEvent(http://10.75.224.44:50055/beer/sc/mo..._2021@44:55061)
at handleClick(http://10.75.224.44:50055/beer/sc/mo..._2021@24:52375)
at _handleMouseUp(http://10.75.224.44:50055/beer/sc/mo..._2021@54:52060)
at handleMouseUp(http://10.75.224.44:50055/beer/sc/mo..._2021@26:51901)
at dispatch(http://10.75.224.44:50055/beer/sc/mo..._2021@30:56779)
at eval(eval at isc__makeFunction (http://10.75.224.44:50055/beer/sc/mo...5_2021@21:2503)
addToMasterLog @ ISC_Core.js?sgwt_version_date=6_25_2021:29626
addLogMessage @ ISC_Core.js?sgwt_version_date=6_25_2021:29591
log @ ISC_Core.js?sgwt_version_date=6_25_2021:29464
logMessage @ ISC_Core.js?sgwt_version_date=6_25_2021:27602
logWarn @ ISC_Core.js?sgwt_version_date=6_25_2021:27680
isc_logWarn @ ISC_Core.js?sgwt_version_date=6_25_2021:2421
JGm_g$ @ SC.java:579
uVk_g$ @ SmartGwtEntryPoint.java:536
F0h_g$ @ Impl.java:256
E0h_g$ @ Impl.java:238
p0h_g$ @ Impl.java:363
(anonymous) @ Impl.java:78
Bu_g$.obj_0_g$.click @ Canvas.java:8267
handleActivate @ ISC_Foundation.js?sgwt_version_date=6_25_2021:4712
handleClick @ ISC_Foundation.js?sgwt_version_date=6_25_2021:4737
bubbleEvent @ ISC_Core.js?sgwt_version_date=6_25_2021:55061
handleClick @ ISC_Core.js?sgwt_version_date=6_25_2021:52375
_handleMouseUp @ ISC_Core.js?sgwt_version_date=6_25_2021:52060
handleMouseUp @ ISC_Core.js?sgwt_version_date=6_25_2021:51901
dispatch @ ISC_Core.js?sgwt_version_date=6_25_2021:56779
eval @ VM811:3

Thanks.

Attached Files

**Isomorphic** · 2 Jul 2021, 15:57

There's no obvious culprit for either of these issues in the framework, and we're not yet able to reproduce them in house.
We've added a null check to prevent the crash in TabIndexManager.calculateTabIndex() [the second problem you're seeing] as well as adding some logging to possibly shed light on the bad state that is causing this crash.
If you go through the process, instead of an exception, you should see a warning along the lines of "TabIndexManager tree appears invalid. Null value returned for nextNode" in the developer console with some additional information attached.

Enabling "debug" level logging for the category "TabIndexManager" will cause the maximal amount of information to be logged (it will be a bit spammy!)

If you can show us the full logs from the developer console, ideally from the first "INFO:Log:initialized" up to when you experience these actual exceptions we will take a look and see if they reveal what's going wrong.

Given that you're also encountering other problems, like the infinite recursion [the first problem], this logging may reveal more than just TabIndex related issues.

If you'd prefer to share the logging privately, rather than posting it to the forums, you can use the support@isomorphic.com email address.

Regards
Isomorphic Software

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RangeError on click event

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