Assertion failed: 
java.lang.Throwable
	at com.intellij.openapi.diagnostic.Logger.assertTrue(Logger.java:89)
	at com.intellij.openapi.diagnostic.Logger.assertTrue(Logger.java:96)
	at com.intellij.psi.impl.source.tree.CompositePsiElement.delete(CompositePsiElement.java:13)
	at com.intellij.codeInspection.unneededThrows.RedundantThrows$MyQuickFix.a(RedundantThrows.java:54)
	at com.intellij.codeInspection.unneededThrows.RedundantThrows$MyQuickFix.applyFix(RedundantThrows.java:51)
	at com.intellij.codeInspection.unneededThrows.RedundantThrows$MyQuickFix.applyFix(RedundantThrows.java:61)
	at com.intellij.codeInspection.ui.Browser$4$1.run(Browser.java:2)
	at com.intellij.openapi.command.impl.CommandProcessorImpl.executeCommand(CommandProcessorImpl.java:38)
	at com.intellij.openapi.command.impl.CommandProcessorImpl.executeCommand(CommandProcessorImpl.java:71)
	at com.intellij.codeInspection.ui.Browser$4.run(Browser.java:2)
	at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:287)
	at com.intellij.codeInspection.ui.Browser.a(Browser.java:142)
	at com.intellij.codeInspection.ui.Browser.invokeLocalFix(Browser.java:73)
	at com.intellij.codeInspection.ui.Browser$1.hyperlinkUpdate(Browser.java:22)
	at javax.swing.JEditorPane.fireHyperlinkUpdate(JEditorPane.java:327)
	at javax.swing.text.html.HTMLEditorKit$LinkController.activateLink(HTMLEditorKit.java:828)
	at javax.swing.text.html.HTMLEditorKit$LinkController.mouseClicked(HTMLEditorKit.java:638)
	at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:253)
	at java.awt.Component.processMouseEvent(Component.java:6044)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
	at java.awt.Component.processEvent(Component.java:5806)
	at java.awt.Container.processEvent(Container.java:2058)
	at java.awt.Component.dispatchEventImpl(Component.java:4413)
	at java.awt.Container.dispatchEventImpl(Container.java:2116)
	at java.awt.Component.dispatchEvent(Component.java:4243)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4322)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3995)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3916)
	at java.awt.Container.dispatchEventImpl(Container.java:2102)
	at java.awt.Window.dispatchEventImpl(Window.java:2440)
	at java.awt.Component.dispatchEvent(Component.java:4243)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
	at com.intellij.ide.IdeEventQueue.c(IdeEventQueue.java:94)
	at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:149)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:107)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)