intellij: IDE fatal error

No idea what happened

AWT events are not allowed inside write action: sun.awt.PeerEvent[INVOCATION_DEFAULT,runnable=sun.awt.SunToolkit$1@7133129e,notifier=null,catchExceptions=false,when=1513019263170] on sun.lwawt.macosx.LWCToolkit@17828bff
java.lang.Throwable
	at com.intellij.openapi.diagnostic.Logger.error(Logger.java:132)
	at com.intellij.openapi.application.impl.NoSwingUnderWriteAction.a(NoSwingUnderWriteAction.java:36)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:376)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:109)
	at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:190)
	at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:235)
	at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:233)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:233)
	at java.awt.Dialog.show(Dialog.java:1084)
	at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl$MyDialog.show(DialogWrapperPeerImpl.java:736)
	at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl.show(DialogWrapperPeerImpl.java:458)
	at com.intellij.openapi.ui.DialogWrapper.invokeShow(DialogWrapper.java:1686)
	at com.intellij.openapi.ui.DialogWrapper.show(DialogWrapper.java:1635)
	at com.intellij.openapi.ui.DialogWrapper.showAndGet(DialogWrapper.java:1650)
	at com.intellij.openapi.fileEditor.impl.NonProjectFileWritingAccessProvider.a(NonProjectFileWritingAccessProvider.java:113)
	at com.intellij.openapi.fileEditor.impl.NonProjectFileWritingAccessProvider.requestWriting(NonProjectFileWritingAccessProvider.java:89)
	at com.intellij.openapi.vcs.readOnlyHandler.ReadonlyStatusHandlerImpl.ensureFilesWritable(ReadonlyStatusHandlerImpl.java:98)
	at com.intellij.openapi.vfs.ReadonlyStatusHandler.ensureFilesWritable(ReadonlyStatusHandler.java:30)
	at com.intellij.openapi.fileEditor.impl.FileDocumentManagerImpl.requestWriting(FileDocumentManagerImpl.java:506)
	at com.intellij.codeInsight.actions.AbstractLayoutCodeProcessor.d(AbstractLayoutCodeProcessor.java:320)
	at com.intellij.codeInsight.actions.AbstractLayoutCodeProcessor.run(AbstractLayoutCodeProcessor.java:252)
	at com.google.idea.blaze.base.buildmodifier.FileSaveHandler.formatBuildFile(FileSaveHandler.java:51)
	at com.google.idea.blaze.base.buildmodifier.FileSaveHandler.beforeDocumentSaving(FileSaveHandler.java:39)
	at sun.reflect.GeneratedMethodAccessor369.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.intellij.openapi.fileEditor.impl.FileDocumentManagerImpl.a(FileDocumentManagerImpl.java:165)
	at com.intellij.openapi.fileEditor.impl.FileDocumentManagerImpl.a(FileDocumentManagerImpl.java:132)
	at com.sun.proxy.$Proxy23.beforeDocumentSaving(Unknown Source)
	at com.intellij.openapi.fileEditor.impl.FileDocumentManagerImpl.c(FileDocumentManagerImpl.java:428)
	at com.intellij.pom.core.impl.PomModelImpl.guardPsiModificationsIn(PomModelImpl.java:411)
	at com.intellij.openapi.fileEditor.impl.FileDocumentManagerImpl.e(FileDocumentManagerImpl.java:427)
	at com.intellij.openapi.fileEditor.impl.FileDocumentManagerImpl.d(FileDocumentManagerImpl.java:390)
	at com.intellij.openapi.application.WriteAction.run(WriteAction.java:91)
	at com.intellij.openapi.fileEditor.impl.FileDocumentManagerImpl.a(FileDocumentManagerImpl.java:390)
	at com.intellij.openapi.fileEditor.impl.FileDocumentManagerImpl.saveDocument(FileDocumentManagerImpl.java:344)
	at com.intellij.openapi.fileEditor.impl.FileDocumentManagerImpl.saveDocument(FileDocumentManagerImpl.java:334)
	at com.intellij.openapi.fileEditor.impl.FileDocumentManagerImpl.d(FileDocumentManagerImpl.java:283)
	at com.intellij.openapi.application.TransactionGuardImpl$2.run(TransactionGuardImpl.java:314)
	at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.a(LaterInvocator.java:416)
	at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:399)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:762)
	at java.awt.EventQueue.access$500(EventQueue.java:98)
	at java.awt.EventQueue$3.run(EventQueue.java:715)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:732)
	at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:821)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:649)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:365)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

says it happened 7 times since last clear