eclipse.buildId=4.13.0.I20190916-1045
java.version=13.0.1
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_GB
Framework arguments:  -product org.eclipse.epp.package.cpp.product
Command-line arguments:  -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.cpp.product

org.eclipse.ui.navigator
Error
Thu Nov 21 20:50:02 GMT 2019
Problems occurred when invoking code from plug-in: "org.eclipse.ui.navigator".

org.eclipse.core.runtime.CoreException: The default variable is not countable. Failed expression: 
CountExpression [ size=0, mode: 5 ANY_NUMBER]
	at org.eclipse.core.internal.expressions.Expressions.getAsICountable(Expressions.java:259)
	at org.eclipse.core.internal.expressions.CountExpression.evaluate(CountExpression.java:106)
	at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:55)
	at org.eclipse.core.internal.expressions.EnablementExpression.evaluate(EnablementExpression.java:58)
	at org.eclipse.ui.internal.navigator.NavigatorPlugin$Evaluator.run(NavigatorPlugin.java:250)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
	at org.eclipse.ui.internal.navigator.NavigatorPlugin.safeEvaluate(NavigatorPlugin.java:265)
	at org.eclipse.ui.internal.navigator.wizards.CommonWizardDescriptor.isEnabledFor(CommonWizardDescriptor.java:141)
	at org.eclipse.ui.internal.navigator.wizards.CommonWizardDescriptorManager.getEnabledCommonWizardDescriptors(CommonWizardDescriptorManager.java:155)
	at org.eclipse.ui.navigator.WizardActionGroup.setContext(WizardActionGroup.java:196)
	at org.eclipse.ui.internal.navigator.resources.actions.NewActionProvider.fillContextMenu(NewActionProvider.java:112)
	at org.eclipse.ui.navigator.NavigatorActionService$2.run(NavigatorActionService.java:228)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
	at org.eclipse.ui.navigator.NavigatorActionService.addCommonActionProviderMenu(NavigatorActionService.java:222)
	at org.eclipse.ui.navigator.NavigatorActionService.fillContextMenu(NavigatorActionService.java:177)
	at org.eclipse.ui.navigator.CommonNavigatorManager.fillContextMenu(CommonNavigatorManager.java:258)
	at org.eclipse.ui.navigator.CommonNavigatorManager.lambda$1(CommonNavigatorManager.java:270)
	at org.eclipse.jface.action.MenuManager.fireAboutToShow(MenuManager.java:341)
	at org.eclipse.jface.action.MenuManager.handleAboutToShow(MenuManager.java:471)
	at org.eclipse.jface.action.MenuManager.access$1(MenuManager.java:466)
	at org.eclipse.jface.action.MenuManager$2.menuShown(MenuManager.java:498)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:259)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4173)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1081)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1062)
	at org.eclipse.swt.widgets.Control.WM_INITMENUPOPUP(Control.java:5134)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:4790)
	at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:348)
	at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1501)
	at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:2138)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:4812)
	at org.eclipse.swt.internal.win32.OS.TrackPopupMenu(Native Method)
	at org.eclipse.swt.widgets.Menu._setVisible(Menu.java:253)
	at org.eclipse.swt.widgets.Display.runPopups(Display.java:4027)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3579)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1160)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:633)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:557)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:567)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:660)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1468)