Unhandled event loop exception - Data Explorer Node (while clicking Interactive view of data explorer node)

KNIME Analytics Platform
1

I have installed KNIME Javascript View(Labs) extension to use Data explorer node.
I have configured this node successfully but when I am clicking Interactive view of data explorer node, I am getting Unhandled event loop exception. I am using v5.3.0.

Below are additional exception trace track of this error.
java.lang.NullPointerException: Cannot invoke “org.knime.gateway.impl.webui.service.events.SelectionEventBus.addSelectionEventListener(java.util.function.Consumer)” because “org.knime.js.cef.wizardnodeview.CEFWizardNodeView.selectionEventBus” is null
at org.knime.js.cef.wizardnodeview.CEFWizardNodeView.setupSelectionEvents(CEFWizardNodeView.java:204)
at org.knime.js.cef.wizardnodeview.CEFWizardNodeView.initializeJsonRpcJavaBrowserCommunication(CEFWizardNodeView.java:243)
at org.knime.js.swt.wizardnodeview.WizardNodeView.lambda$2(WizardNodeView.java:389)
at org.knime.js.swt.wizardnodeview.WizardNodeView$11.completed(WizardNodeView.java:463)
at com.equo.chromium.swt.internal.Chromium.lambda$9(Chromium.java:870)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:132)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4047)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3663)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1151)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1042)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:152)
at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:639)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:546)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)
at org.knime.product.rcp.KNIMEApplication.start(KNIMEApplication.java:211)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:208)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:143)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:109)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:439)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:271)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:651)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:588)
at org.eclipse.equinox.launcher.Main.run(Main.java:1459)

2

Just additional detail, I am getting this issue in all javascript nodes view. Be it data explorer or be it histogram. I have installed java script KNIME View (Labs) extension. It was installed successfully. I am able to configured the node even execution is working fine but when I click on view: Histogram view or data explorer view or any other view in their respective node, I am getting this issue. How to resolve it.

3

Hi @Saurabh_Agrawal

Are you using classic UI by any chance? The error code looks very similar to an earlier reported issue that affects everybody. Try the solution mentioned here:

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4

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