ListGrid.exportClientData(dsRequest) error when grid is grouped

[anderfim]

Version: v9.1p_2018-01-07/PowerEdition Deployment (built 2018-01-07)

Error: com.google.gwt.core.shared.SerializableThrowable: Exception caught: (TypeError) __gwt$exception: <skipped>: Cannot read property 'getOrCreateJsObj__Lcom_google_gwt_core_client_JavaScriptObject_2' of null

protected ListGrid mGrid;

private ClickHandler getExportToFileHandler() {
ClickHandler clickHandler = new ClickHandler() {
public void onClick(ClickEvent event) {
exportToFile(ExportTool.getExportProperties());
}
};
return clickHandler;
}

protected void exportToFile(final DSRequest dsRequestProperties) {
final ResultSet resultSet = mGrid.getResultSet();
resultSet.getRange(0, resultSet.getLength());

mHandler = resultSet.addDataArrivedHandler(new com.smartgwt.client.data.events.DataArrivedHandler() {
@Override
public void onDataArrived(com.smartgwt.client.data.events.DataArrivedEvent dataArrivedEvent) {
mGrid.exportClientData(dsRequestProperties);
removeHandler();
}
});
mGrid.getResultSet().getRange(0, mGrid.getResultSet().getLength());
}

public class ExportTool {

public static DSRequest getExportProperties(){
DSRequest dsRequestProperties = new DSRequest();
dsRequestProperties.setExportAs((ExportFormat)EnumUtil.getEnum(ExportFormat.values(), "ooxml"));
dsRequestProperties.setExportDisplay(ExportDisplay.DOWNLOAD);
return dsRequestProperties;
}
}

[anderfim]

I'll fix the formatting :p

[Isomorphic]

Please see the FAQ for how to report issues: we need to be able to reproduce the issue, and this code is neither complete nor runnable.

You also neglected to report the stack trace for the JS error, which is also always required.

[anderfim]

I am sorry about the bad reporting. I found the answer my self, and I will give a better description and so on next time.