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java.lang.NullPointerException: 	at com.intellij.openapi.actionSystem.CommonShortcuts.shortcutsById(CommonShortcuts.java:166)	at com.intellij.openapi.actionSystem.CommonShortcuts.getCloseActiveWindow(CommonShortcuts.java:124)	at com.intellij.openapi.ui.DialogWrapper.registerKeyboardShortcuts(DialogWrapper.java:1698)	at com.intellij.openapi.ui.DialogWrapper.invokeShow(DialogWrapper.java:1654)	at com.intellij.openapi.ui.DialogWrapper.show(DialogWrapper.java:1608)	at com.intellij.openapi.ui.Messages$MessageDialog.show(Messages.java:1466)	at com.intellij.openapi.ui.Messages.showIdeaMessageDialog(Messages.java:171)	at com.intellij.openapi.ui.Messages.showDialog(Messages.java:157)	at com.intellij.openapi.ui.MessageDialogBuilder$YesNo.show(MessageDialogBuilder.java:107)	at com.intellij.openapi.application.impl.ApplicationImpl.a(ApplicationImpl.java:931)	at com.intellij.openapi.application.impl.ApplicationImpl.access$900(ApplicationImpl.java:95)	at com.intellij.openapi.application.impl.ApplicationImpl$15.run(ApplicationImpl.java:842)	at com.intellij.openapi.application.impl.ApplicationImpl.exit(ApplicationImpl.java:855)	at com.intellij.openapi.application.impl.ApplicationImpl.exit(ApplicationImpl.java:804)	at com.intellij.openapi.application.impl.ApplicationImpl.exit(ApplicationImpl.java:799)	at com.intellij.openapi.wm.impl.IdeFrameImpl$5$1.run(IdeFrameImpl.java:279)	at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.a(LaterInvocator.java:345)	at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:329)	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)	at java.awt.EventQueue.access$500(EventQueue.java:97)	at java.awt.EventQueue$3.run(EventQueue.java:709)	at java.awt.EventQueue$3.run(EventQueue.java:703)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)	at com.intellij.ide.IdeEventQueue.h(IdeEventQueue.java:861)	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:662)	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:390)	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)