java.lang.IllegalArgumentException: Scope is compiled, can't scan: PsiClass:Comparable

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java.lang.IllegalArgumentException: Scope is compiled, can't scan: PsiClass:Comparable
at com.intellij.psi.impl.search.LowLevelSearchUtil.a(LowLevelSearchUtil.java:81)
at com.intellij.psi.impl.search.LowLevelSearchUtil.a(LowLevelSearchUtil.java:205)
at com.intellij.psi.impl.search.LowLevelSearchUtil.processTextOccurrences(LowLevelSearchUtil.java:271)
at com.intellij.psi.impl.search.LowLevelSearchUtil.processElementsContainingWordInElement(LowLevelSearchUtil.java:203)
at com.intellij.psi.impl.search.PsiSearchHelperImpl$2.processInReadAction(PsiSearchHelperImpl.java:200)
at com.intellij.psi.impl.search.PsiSearchHelperImpl$2.processInReadAction(PsiSearchHelperImpl.java:188)
at com.intellij.openapi.application.ReadActionProcessor$1.compute(ReadActionProcessor.java:32)
at com.intellij.openapi.application.ReadActionProcessor$1.compute(ReadActionProcessor.java:29)
at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:872)
at com.intellij.openapi.application.ReadActionProcessor.process(ReadActionProcessor.java:29)
at com.intellij.concurrency.JobLauncherImpl.a(JobLauncherImpl.java:99)
at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:568)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:519)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
at com.intellij.concurrency.JobLauncherImpl.a(JobLauncherImpl.java:95)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1032)
at com.intellij.concurrency.JobLauncherImpl.a(JobLauncherImpl.java:106)
at com.intellij.concurrency.JobLauncherImpl.invokeConcurrentlyUnderProgress(JobLauncherImpl.java:52)
at com.intellij.psi.impl.search.PsiSearchHelperImpl.processElementsWithWord(PsiSearchHelperImpl.java:208)
at com.intellij.psi.impl.search.PsiSearchHelperImpl.a(PsiSearchHelperImpl.java:905)
at com.intellij.psi.impl.search.PsiSearchHelperImpl.processRequests(PsiSearchHelperImpl.java:597)
at com.intellij.psi.search.SearchRequestQuery.processResults(SearchRequestQuery.java:45)
at com.intellij.util.AbstractQuery.forEach(AbstractQuery.java:79)
at com.intellij.util.MergeQuery.processSubQuery(MergeQuery.java:85)
at com.intellij.util.MergeQuery.forEach(MergeQuery.java:57)
at com.intellij.util.UniqueResultsQuery.process(UniqueResultsQuery.java:66)
at com.intellij.util.UniqueResultsQuery.forEach(UniqueResultsQuery.java:56)
at com.intellij.refactoring.turnRefsToSuper.TurnRefsToSuperProcessorBase.a(TurnRefsToSuperProcessorBase.java:362)
at com.intellij.refactoring.turnRefsToSuper.TurnRefsToSuperProcessorBase.a(TurnRefsToSuperProcessorBase.java:303)
at com.intellij.refactoring.turnRefsToSuper.TurnRefsToSuperProcessorBase.a(TurnRefsToSuperProcessorBase.java:239)
at com.intellij.refactoring.turnRefsToSuper.TurnRefsToSuperProcessorBase.detectTurnToSuperRefs(TurnRefsToSuperProcessorBase.java:154)
at com.intellij.refactoring.extractSuperclass.ExtractSuperBaseProcessor.findUsages(ExtractSuperBaseProcessor.java:110)
at com.intellij.refactoring.BaseRefactoringProcessor$1$1.compute(BaseRefactoringProcessor.java:167)
at com.intellij.refactoring.BaseRefactoringProcessor$1$1.compute(BaseRefactoringProcessor.java:164)
at com.intellij.openapi.project.DumbService$1.run(DumbService.java:90)
at com.intellij.openapi.project.DumbService$2.compute(DumbService.java:132)
at com.intellij.openapi.project.DumbService$2.compute(DumbService.java:126)
at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:876)
at com.intellij.openapi.project.DumbService.runReadActionInSmartMode(DumbService.java:126)
at com.intellij.openapi.project.DumbService.runReadActionInSmartMode(DumbService.java:87)
at com.intellij.refactoring.BaseRefactoringProcessor$1.run(BaseRefactoringProcessor.java:164)
at com.intellij.openapi.progress.impl.CoreProgressManager$6.run(CoreProgressManager.java:265)
at com.intellij.openapi.progress.impl.CoreProgressManager$TaskRunnable.run(CoreProgressManager.java:710)
at com.intellij.openapi.progress.impl.CoreProgressManager$11.run(CoreProgressManager.java:423)
at com.intellij.openapi.progress.impl.CoreProgressManager$3.run(CoreProgressManager.java:179)
at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:568)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:519)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:164)
at com.intellij.openapi.application.impl.ApplicationImpl.a(ApplicationImpl.java:561)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

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