java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at org.twodividedbyzero.idea.findbugs.gui.toolwindow.view.ToolWindowPanel.getInstance(ToolWindowPanel.java:392)
at org.twodividedbyzero.idea.findbugs.gui.editor.BugsLineMarkerProvider.getLineMarkerInfo(BugsLineMarkerProvider.java:73)
at com.intellij.codeInsight.daemon.impl.LineMarkersPass.addLineMarkers(LineMarkersPass.java:181)
at com.intellij.codeInsight.daemon.impl.LineMarkersPass.doCollectInformation(LineMarkersPass.java:111)
at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:70)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:444)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1178)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:435)
at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:446)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:392)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:432)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:408)
at jsr166e.ForkJoinTask.doExec(ForkJoinTask.java:260)
at jsr166e.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:858)
at jsr166e.ForkJoinPool.scan(ForkJoinPool.java:1687)
at jsr166e.ForkJoinPool.runWorker(ForkJoinPool.java:1642)
at jsr166e.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:108)

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