Unhandled event loop exception java.lang.IllegalArgumentException: at org.eclipse.core.runtime.Assert.isLegal(Assert.java:66) at org.eclipse.core.runtime.Assert.isLegal(Assert.java:50) at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.findElementsRecursive(ModelServiceImpl.java:175) at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.findPerspectiveElements(ModelServiceImpl.java:446) at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.findPlaceholderFor(ModelServiceImpl.java:669) at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.showElementInWindow(ModelServiceImpl.java:632) at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:624) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.delegateBringToTop(PartServiceImpl.java:786) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:757) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:679) at org.eclipse.e4.ui.internal.workbench.swt.AbstractPartRenderer.activate(AbstractPartRenderer.java:97) at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.lambda$0(ContributedPartRenderer.java:63) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4209) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1043) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1067) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1052) at org.eclipse.swt.widgets.Shell.setActiveControl(Shell.java:1510) at org.eclipse.swt.widgets.Shell.setActiveControl(Shell.java:1473) at org.eclipse.swt.widgets.Control.sendFocusEvent(Control.java:2970) at org.eclipse.swt.widgets.Widget.wmSetFocus(Widget.java:2266) at org.eclipse.swt.widgets.Control.WM_SETFOCUS(Control.java:5441) at org.eclipse.swt.widgets.Control.windowProc(Control.java:4832) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4930) at org.eclipse.swt.internal.win32.OS.SetFocus(Native Method) at org.eclipse.swt.widgets.Control.forceFocus(Control.java:1107) at org.eclipse.swt.widgets.Control.setFocus(Control.java:3455) at org.eclipse.swt.widgets.Composite.setFocus(Composite.java:1074) at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer$1.setFocus(ContributedPartRenderer.java:109) at org.eclipse.swt.widgets.Composite.setFocus(Composite.java:1072) at org.eclipse.swt.widgets.Composite.setFocus(Composite.java:1072) at org.eclipse.swt.custom.CTabFolder.setFocus(CTabFolder.java:2681) at org.eclipse.swt.widgets.Decorations.restoreFocus(Decorations.java:761) at org.eclipse.swt.widgets.Decorations.WM_ACTIVATE(Decorations.java:1525) at org.eclipse.swt.widgets.Shell.WM_ACTIVATE(Shell.java:2291) at org.eclipse.swt.widgets.Control.windowProc(Control.java:4757) at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:340) at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1480) at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:2263) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4930) at org.eclipse.swt.internal.win32.OS.CallWindowProc(Native Method) at org.eclipse.swt.widgets.Shell.callWindowProc(Shell.java:506) at org.eclipse.swt.widgets.Control.windowProc(Control.java:4861) at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:340) at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1480) at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:2263) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4930) at org.eclipse.swt.internal.win32.OS.CallWindowProc(Native Method) at org.eclipse.swt.widgets.Shell.callWindowProc(Shell.java:506) at org.eclipse.swt.widgets.Control.windowProc(Control.java:4861) at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:340) at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1480) at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:2263) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4930) at org.eclipse.swt.internal.win32.OS.DispatchMessage(Native Method) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3624) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1157) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1046) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:644) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:551) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:156) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:152) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) 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(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:654) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591) at org.eclipse.equinox.launcher.Main.run(Main.java:1462)