Crash on startup.

[Former user]

java.lang.Throwable: AWT events are not allowed inside write action: java.awt.event.InvocationEvent[INVOCATION_DEFAULT,runnable=sun.awt.GlobalCursorManager$NativeUpdater@3db74f84,notifier=null,catchExceptions=false,when=1570691512060] on sun.awt.windows.WToolkit@8fa87fb at com.intellij.openapi.diagnostic.Logger.error(Logger.java:145) at com.intellij.openapi.application.impl.NoSwingUnderWriteAction.lambda$watchForEvents$0(NoSwingUnderWriteAction.java:22) at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:427) at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203) at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124) at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:117) at java.desktop/java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:190) at java.desktop/java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:235) at java.desktop/java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:233) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.desktop/java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:233) at java.desktop/java.awt.Dialog.show(Dialog.java:1063) at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl$MyDialog.show(DialogWrapperPeerImpl.java:707) at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl.show(DialogWrapperPeerImpl.java:432) at com.intellij.openapi.ui.DialogWrapper.doShow(DialogWrapper.java:1685) at com.intellij.openapi.ui.DialogWrapper.show(DialogWrapper.java:1644) at com.intellij.openapi.ui.messages.MessageDialog.show(MessageDialog.java:177) at com.intellij.ui.messages.MessagesServiceImpl.showMessageDialog(MessagesServiceImpl.java:70) at com.intellij.openapi.ui.Messages.showDialog(Messages.java:219) at com.intellij.openapi.ui.Messages.showDialog(Messages.java:178) at com.intellij.openapi.ui.Messages.showErrorDialog(Messages.java:791) at org.pmesmeur.sketchit.ui.ExceptionDialog.show(ExceptionDialog.java:13) at org.pmesmeur.sketchit.SketchIt.generatePlantUmlDiagramWithExceptionHandling(SketchIt.java:63) at org.pmesmeur.sketchit.SketchIt.generatePlantUmlModel(SketchIt.java:53) at org.pmesmeur.sketchit.SketchIt.actionBody(SketchIt.java:45) at org.pmesmeur.sketchit.SketchIt.access$000(SketchIt.java:12) at org.pmesmeur.sketchit.SketchIt$1.run(SketchIt.java:32) at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:994) at org.pmesmeur.sketchit.SketchIt.runInsideAnIntellijWriteAction(SketchIt.java:30) at org.pmesmeur.sketchit.SketchIt.actionPerformed(SketchIt.java:24) at com.intellij.openapi.actionSystem.ex.ActionUtil$1.run(ActionUtil.java:265) at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:282) at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.lambda$actionPerformed$0(ActionMenuItem.java:292) at com.intellij.openapi.wm.impl.FocusManagerImpl.runOnOwnContext(FocusManagerImpl.java:265) at com.intellij.openapi.wm.impl.IdeFocusManagerImpl.runOnOwnContext(IdeFocusManagerImpl.java:107) at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:282) at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1967) at com.intellij.openapi.actionSystem.impl.ActionMenuItem.lambda$fireActionPerformed$0(ActionMenuItem.java:111) at com.intellij.openapi.application.TransactionGuardImpl.runSyncTransaction(TransactionGuardImpl.java:82) at com.intellij.openapi.application.TransactionGuardImpl.lambda$submitTransaction$1(TransactionGuardImpl.java:106) at com.intellij.openapi.application.TransactionGuardImpl.submitTransaction(TransactionGuardImpl.java:115) at com.intellij.openapi.application.TransactionGuard.submitTransaction(TransactionGuard.java:121) at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:111) at com.intellij.ui.plaf.beg.BegMenuItemUI.doClick(BegMenuItemUI.java:524) at com.intellij.ui.plaf.beg.BegMenuItemUI.access$300(BegMenuItemUI.java:35) at com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(BegMenuItemUI.java:546) at java.desktop/java.awt.Component.processMouseEvent(Component.java:6651) at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3342) at java.desktop/java.awt.Component.processEvent(Component.java:6416) at java.desktop/java.awt.Container.processEvent(Container.java:2263) at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5026) at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321) at java.desktop/java.awt.Component.dispatchEvent(Component.java:4858) at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4918) at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4547) at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4488) at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2307) at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2773) at java.desktop/java.awt.Component.dispatchEvent(Component.java:4858) at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:778) at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:727) at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85) at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95) at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:751) at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:749) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85) at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:748) at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:824) at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:769) at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$8(IdeEventQueue.java:412) at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:704) at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:411) at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203) at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124) at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113) at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109) at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)