java.lang.Throwable at com.intellij.openapi.project.DumbServiceImpl.queueTask(DumbServiceImpl.java:303) at com.intellij.openapi.project.DumbModeTask.queue(DumbModeTask.java:64) at com.intellij.openapi.roots.impl.PushedFilePropertiesUpdaterImpl.queueTasks(PushedFilePropertiesUpdaterImpl.java:225) at com.intellij.openapi.roots.impl.PushedFilePropertiesUpdaterImpl.pushAll(PushedFilePropertiesUpdaterImpl.java:302) at com.intellij.openapi.roots.impl.JavaLanguageLevelPusher.pushLanguageLevel(JavaLanguageLevelPusher.java:30) at com.intellij.openapi.roots.impl.LanguageLevelProjectExtensionImpl.languageLevelsChanged(LanguageLevelProjectExtensionImpl.java:124) at com.intellij.openapi.roots.impl.LanguageLevelProjectExtensionImpl.setLanguageLevel(LanguageLevelProjectExtensionImpl.java:115) at com.intellij.openapi.roots.ui.configuration.ProjectConfigurable.lambda$apply$0(ProjectConfigurable.java:146) at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:1015) at com.intellij.openapi.roots.ui.configuration.ProjectConfigurable.apply(ProjectConfigurable.java:125) at com.intellij.openapi.roots.ui.configuration.ProjectStructureConfigurable.apply(ProjectStructureConfigurable.java:312) at com.intellij.openapi.options.ex.SingleConfigurableEditor$ApplyAction.actionPerformed(SingleConfigurableEditor.java:209) at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1967) at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2308) at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:405) at java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262) at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:270) at java.desktop/java.awt.Component.processMouseEvent(Component.java:6654) at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3345) at java.desktop/java.awt.Component.processEvent(Component.java:6419) at java.desktop/java.awt.Container.processEvent(Container.java:2263) at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5029) at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321) at java.desktop/java.awt.Component.dispatchEvent(Component.java:4861) 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:2793) at java.desktop/java.awt.Component.dispatchEvent(Component.java:4861) 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:898) at com.intellij.ide.IdeEventQueue.dispatchMouseEvent(IdeEventQueue.java:820) at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:743) at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$6(IdeEventQueue.java:439) at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:803) at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$7(IdeEventQueue.java:438) at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:106) at com.intellij.ide.IdeEventQueue.performActivity(IdeEventQueue.java:604) at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$8(IdeEventQueue.java:436) at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:873) at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:484) at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:207) at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128) at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:121) 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$4.run(WaitDispatchSupport.java:233) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.desktop/java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:233) at java.desktop/java.awt.Dialog.show(Dialog.java:1070) at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl$MyDialog.show(DialogWrapperPeerImpl.java:702) at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl.show(DialogWrapperPeerImpl.java:439) at com.intellij.openapi.ui.DialogWrapper.doShow(DialogWrapper.java:1668) at com.intellij.openapi.ui.DialogWrapper.show(DialogWrapper.java:1626) at com.intellij.ide.actions.ShowStructureSettingsAction.showDialog(ShowStructureSettingsAction.java:46) at com.intellij.ide.actions.ShowStructureSettingsAction.actionPerformed(ShowStructureSettingsAction.java:36) at com.intellij.openapi.actionSystem.ex.ActionUtil.lambda$performActionDumbAwareWithCallbacks$4(ActionUtil.java:235) at com.intellij.openapi.actionSystem.ex.ActionUtil.performDumbAwareWithCallbacks(ActionUtil.java:256) at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAwareWithCallbacks(ActionUtil.java:235) at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.lambda$performAction$0(ActionMenuItem.java:289) at com.intellij.openapi.wm.impl.FocusManagerImpl.runOnOwnContext(FocusManagerImpl.java:233) at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.performAction(ActionMenuItem.java:281) at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:296) at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1967) at com.intellij.openapi.actionSystem.impl.ActionMenuItem.lambda$fireActionPerformed$2(ActionMenuItem.java:111) at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:106) at com.intellij.openapi.application.TransactionGuardImpl.performUserActivity(TransactionGuardImpl.java:95) at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:111) at com.intellij.ui.plaf.beg.BegMenuItemUI.doClick(BegMenuItemUI.java:540) at com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(BegMenuItemUI.java:570) at java.desktop/java.awt.Component.processMouseEvent(Component.java:6654) at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3345) at java.desktop/java.awt.Component.processEvent(Component.java:6419) at java.desktop/java.awt.Container.processEvent(Container.java:2263) at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5029) at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321) at java.desktop/java.awt.Component.dispatchEvent(Component.java:4861) 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:2793) at java.desktop/java.awt.Component.dispatchEvent(Component.java:4861) 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:898) at com.intellij.ide.IdeEventQueue.dispatchMouseEvent(IdeEventQueue.java:820) at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:743) at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$6(IdeEventQueue.java:439) at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:803) at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$7(IdeEventQueue.java:438) at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:119) at com.intellij.ide.IdeEventQueue.performActivity(IdeEventQueue.java:604) at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$8(IdeEventQueue.java:436) at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:873) at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:484) at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:207) at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128) at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117) at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113) at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105) at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:92)