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java.lang.ArrayIndexOutOfBoundsException: No such child: 0	at java.awt.Container.getComponent(Unknown Source)	at com.intellij.openapi.fileEditor.impl.EditorWindow.unsplit(EditorWindow.java:589)	at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl$4.run(FileEditorManagerImpl.java:424)	at com.intellij.openapi.fileEditor.impl.EditorsSplitters.runChange(EditorsSplitters.java:614)	at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.a(FileEditorManagerImpl.java:404)	at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.access$400(FileEditorManagerImpl.java:83)	at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl$3.run(FileEditorManagerImpl.java:383)	at com.intellij.openapi.command.impl.CommandProcessorImpl.executeCommand(CommandProcessorImpl.java:110)	at com.intellij.openapi.command.impl.CommandProcessorImpl.executeCommand(CommandProcessorImpl.java:86)	at com.intellij.openapi.command.impl.CommandProcessorImpl.executeCommand(CommandProcessorImpl.java:78)	at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.closeFile(FileEditorManagerImpl.java:381)	at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.closeFile(FileEditorManagerImpl.java:370)	at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.closeAllFiles(FileEditorManagerImpl.java:1340)	at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.projectClosed(FileEditorManagerImpl.java:1018)	at com.intellij.openapi.project.impl.ProjectImpl.d(ProjectImpl.java:324)	at com.intellij.openapi.project.impl.ProjectImpl.access$300(ProjectImpl.java:66)	at com.intellij.openapi.project.impl.ProjectImpl$MyProjectManagerListener.projectClosed(ProjectImpl.java:350)	at com.intellij.openapi.project.impl.ProjectManagerImpl$2.projectClosed(ProjectManagerImpl.java:144)	at com.intellij.openapi.project.impl.ProjectManagerImpl.e(ProjectManagerImpl.java:943)	at com.intellij.openapi.project.impl.ProjectManagerImpl.a(ProjectManagerImpl.java:868)	at com.intellij.openapi.project.impl.ProjectManagerImpl.closeProject(ProjectManagerImpl.java:850)	at com.intellij.ide.impl.ProjectUtil.closeProject(ProjectUtil.java:87)	at com.intellij.ide.actions.CloseProjectAction.actionPerformed(CloseProjectAction.java:35)	at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:214)	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)	at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:82)	at com.intellij.ui.plaf.beg.BegMenuItemUI.a(BegMenuItemUI.java:496)	at com.intellij.ui.plaf.beg.BegMenuItemUI.access$300(BegMenuItemUI.java:43)	at com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(BegMenuItemUI.java:516)	at java.awt.Component.processMouseEvent(Unknown Source)	at javax.swing.JComponent.processMouseEvent(Unknown Source)	at java.awt.Component.processEvent(Unknown Source)	at java.awt.Container.processEvent(Unknown Source)	at java.awt.Component.dispatchEventImpl(Unknown Source)	at java.awt.Container.dispatchEventImpl(Unknown Source)	at java.awt.Component.dispatchEvent(Unknown Source)	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)	at java.awt.Container.dispatchEventImpl(Unknown Source)	at java.awt.Window.dispatchEventImpl(Unknown Source)	at java.awt.Component.dispatchEvent(Unknown Source)	at java.awt.EventQueue.dispatchEvent(Unknown Source)	at com.intellij.ide.IdeEventQueue.f(IdeEventQueue.java:621)	at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:507)	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:372)	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)	at java.awt.EventDispatchThread.run(Unknown Source)