Exception

java.lang.Throwable: Light files should have PSI only in one project, existing=com.intellij.psi.SingleRootFileViewProvider{vFile=LightVirtualFile: /_Dummy_.java, content=com.intellij.psi.AbstractFileViewProvider$PsiFileContent@3dc89e29, eventSystemEnabled=false} in Project(name=RefactoringMiner, containerState=COMPONENT_CREATED, componentStore=/home/tsantalis/eclipse-workspace/RefactoringMiner-psi), requested in Project(name=RefactoringMiner, containerState=COMPONENT_CREATED, componentStore=/home/tsantalis/Desktop/RefactoringMiner); psiFiles: class com.intellij.psi.impl.source.PsiJavaFileImpl [Language: JAVA]
at com.intellij.openapi.diagnostic.Logger.error(Logger.java:182)
at com.intellij.psi.impl.file.impl.FileManagerImpl.checkHasNoOtherPsi(FileManagerImpl.java:207)
at com.intellij.psi.impl.file.impl.FileManagerImpl.findViewProvider(FileManagerImpl.java:195)
at com.intellij.psi.impl.file.impl.FileManagerImpl.findFile(FileManagerImpl.java:361)
at com.intellij.psi.impl.PsiDocumentManagerBase.getPsiFile(PsiDocumentManagerBase.java:147)
at com.intellij.psi.impl.PsiDocumentManagerBase.getPsiFile(PsiDocumentManagerBase.java:96)
at com.intellij.psi.impl.PsiDocumentManagerImpl.getPsiFile(PsiDocumentManagerImpl.java:64)
at org.jetbrains.research.ddtm.ide.refactoring.listeners.TypeChangeDocumentListener.documentChangedAndCommitted(TypeChangeDocumentListener.java:117)
at org.jetbrains.research.ddtm.ide.refactoring.listeners.TypeChangeDocumentListener$1.lambda$run$0(TypeChangeDocumentListener.java:97)
at com.intellij.util.SlowOperations.allowSlowOperations(SlowOperations.java:147)
at org.jetbrains.research.ddtm.ide.refactoring.listeners.TypeChangeDocumentListener$1.run(TypeChangeDocumentListener.java:97)
at com.intellij.psi.impl.PsiDocumentManagerBase.performForCommittedDocument(PsiDocumentManagerBase.java:267)
at org.jetbrains.research.ddtm.ide.refactoring.listeners.TypeChangeDocumentListener.documentChanged(TypeChangeDocumentListener.java:91)
at jdk.internal.reflect.GeneratedMethodAccessor126.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at com.intellij.util.EventDispatcher.dispatchVoidMethod(EventDispatcher.java:120)
at com.intellij.util.EventDispatcher.lambda$createMulticaster$1(EventDispatcher.java:85)
at com.sun.proxy.$Proxy89.documentChanged(Unknown Source)
at com.intellij.openapi.editor.impl.DocumentImpl.changedUpdate(DocumentImpl.java:917)
at com.intellij.openapi.editor.impl.DocumentImpl.updateText(DocumentImpl.java:821)
at com.intellij.openapi.editor.impl.DocumentImpl.replaceString(DocumentImpl.java:662)
at com.intellij.openapi.editor.impl.DocumentImpl.replaceString(DocumentImpl.java:599)
at com.intellij.psi.impl.PsiToDocumentSynchronizer.doCommitTransaction(PsiToDocumentSynchronizer.java:212)
at com.intellij.psi.impl.PsiToDocumentSynchronizer.lambda$commitTransaction$1(PsiToDocumentSynchronizer.java:188)
at com.intellij.psi.impl.PsiToDocumentSynchronizer.lambda$doSync$0(PsiToDocumentSynchronizer.java:106)
at com.intellij.psi.impl.PsiToDocumentSynchronizer.performAtomically(PsiToDocumentSynchronizer.java:124)
at com.intellij.psi.impl.PsiToDocumentSynchronizer.doSync(PsiToDocumentSynchronizer.java:106)
at com.intellij.psi.impl.PsiToDocumentSynchronizer.commitTransaction(PsiToDocumentSynchronizer.java:188)
at com.intellij.pom.core.impl.PomModelImpl.commitTransaction(PomModelImpl.java:197)
at com.intellij.pom.core.impl.PomModelImpl.lambda$runTransaction$1(PomModelImpl.java:152)
at com.intellij.psi.impl.DebugUtil.performPsiModification(DebugUtil.java:481)
at com.intellij.pom.core.impl.PomModelImpl.lambda$runTransaction$2(PomModelImpl.java:104)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$executeNonCancelableSection$3(CoreProgressManager.java:222)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:698)
at com.intellij.openapi.progress.impl.CoreProgressManager.computeUnderProgress(CoreProgressManager.java:646)
at com.intellij.openapi.progress.impl.CoreProgressManager.computeInNonCancelableSection(CoreProgressManager.java:237)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeNonCancelableSection(CoreProgressManager.java:221)
at com.intellij.pom.core.impl.PomModelImpl.runTransaction(PomModelImpl.java:93)
at com.intellij.psi.impl.source.tree.ChangeUtil.prepareAndRunChangeAction(ChangeUtil.java:142)
at com.intellij.psi.impl.source.tree.CompositeElement.replaceChild(CompositeElement.java:625)
at com.intellij.psi.formatter.FormatterUtil.replaceWhiteSpace(FormatterUtil.java:365)
at com.intellij.psi.impl.source.codeStyle.PsiBasedFormatterModelWithShiftIndentInside.replaceWithPsiInLeaf(PsiBasedFormatterModelWithShiftIndentInside.java:107)
at com.intellij.psi.formatter.PsiBasedFormattingModel.replaceWithPSI(PsiBasedFormattingModel.java:109)
at com.intellij.psi.formatter.PsiBasedFormattingModel.replaceWhiteSpace(PsiBasedFormattingModel.java:67)
at com.intellij.formatting.engine.FormatProcessorUtils.replaceWhiteSpace(FormatProcessorUtils.java:31)
at com.intellij.formatting.engine.ApplyChangesState.doIteration(ApplyChangesState.java:175)
at com.intellij.formatting.engine.State.iteration(State.java:25)
at com.intellij.formatting.engine.StateProcessor.iteration(StateProcessor.java:26)
at com.intellij.formatting.FormatProcessor.iteration(FormatProcessor.java:108)
at com.intellij.formatting.FormatterImpl$MyFormattingTask.iteration(FormatterImpl.java:653)
at com.intellij.formatting.FormatterImpl.execute(FormatterImpl.java:269)
at com.intellij.formatting.FormatterImpl.format(FormatterImpl.java:236)
at com.intellij.psi.impl.source.codeStyle.CodeFormatterFacade.processRange(CodeFormatterFacade.java:98)
at com.intellij.psi.impl.source.codeStyle.CodeFormatterFacade.processElement(CodeFormatterFacade.java:66)
at com.intellij.formatting.service.CoreFormattingService.formatElement(CoreFormattingService.java:44)
at com.intellij.formatting.service.FormattingServiceUtil.formatElement(FormattingServiceUtil.java:67)
at com.intellij.psi.impl.source.codeStyle.CodeStyleManagerImpl.reformat(CodeStyleManagerImpl.java:81)
at com.intellij.psi.impl.source.codeStyle.CodeStyleManagerImpl.reformat(CodeStyleManagerImpl.java:64)
at com.intellij.psi.impl.PsiElementFactoryImpl.createConstructor(PsiElementFactoryImpl.java:233)
at com.intellij.psi.impl.PsiElementFactoryImpl.createConstructor(PsiElementFactoryImpl.java:226)
at com.intellij.psi.scope.util.PsiScopesUtil.processDummyConstructor(PsiScopesUtil.java:487)
at com.intellij.psi.scope.util.PsiScopesUtil.setupAndRunProcessor(PsiScopesUtil.java:279)
at com.intellij.psi.impl.source.resolve.PsiResolveHelperImpl.getReferencedMethodCandidates(PsiResolveHelperImpl.java:157)
at com.intellij.psi.impl.source.resolve.PsiResolveHelperImpl.getReferencedMethodCandidates(PsiResolveHelperImpl.java:193)
at com.intellij.codeInsight.daemon.impl.analysis.HighlightMethodUtil.isDummyConstructorCall(HighlightMethodUtil.java:736)
at com.intellij.codeInsight.daemon.impl.analysis.HighlightVisitorImpl.visitReferenceExpression(HighlightVisitorImpl.java:1450)
at com.intellij.psi.impl.source.tree.java.PsiReferenceExpressionImpl.accept(PsiReferenceExpressionImpl.java:777)
at com.intellij.codeInsight.daemon.impl.analysis.HighlightVisitorImpl.visit(HighlightVisitorImpl.java:189)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.runVisitors(GeneralHighlightingPass.java:344)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.lambda$collectHighlights$7(GeneralHighlightingPass.java:277)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.analyzeByVisitors(GeneralHighlightingPass.java:303)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.lambda$analyzeByVisitors$8(GeneralHighlightingPass.java:306)
at com.intellij.codeInsight.daemon.impl.analysis.HighlightVisitorImpl.analyze(HighlightVisitorImpl.java:227)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.analyzeByVisitors(GeneralHighlightingPass.java:306)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.lambda$analyzeByVisitors$8(GeneralHighlightingPass.java:306)
at com.intellij.codeInsight.daemon.impl.DefaultHighlightVisitor.analyze(DefaultHighlightVisitor.java:93)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.analyzeByVisitors(GeneralHighlightingPass.java:306)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.collectHighlights(GeneralHighlightingPass.java:274)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.collectInformationWithProgress(GeneralHighlightingPass.java:219)
at com.intellij.codeInsight.daemon.impl.ProgressableTextEditorHighlightingPass.doCollectInformation(ProgressableTextEditorHighlightingPass.java:84)
at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:56)
at com.intellij.codeInsight.problems.WolfTheProblemSolverImpl.orderVincentToCleanTheCar(WolfTheProblemSolverImpl.java:273)
at com.intellij.codeInsight.problems.WolfTheProblemSolverImpl.startCheckingIfVincentSolvedProblemsYet(WolfTheProblemSolverImpl.java:226)
at com.intellij.codeInsight.daemon.impl.WolfHighlightingPass.collectInformationWithProgress(WolfHighlightingPass.java:40)
at com.intellij.codeInsight.daemon.impl.ProgressableTextEditorHighlightingPass.doCollectInformation(ProgressableTextEditorHighlightingPass.java:84)
at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:56)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.lambda$doRun$1(PassExecutorService.java:414)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1084)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.lambda$doRun$2(PassExecutorService.java:407)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$executeProcessUnderProgress$12(CoreProgressManager.java:624)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:698)
at com.intellij.openapi.progress.impl.CoreProgressManager.computeUnderProgress(CoreProgressManager.java:646)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:623)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:66)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.doRun(PassExecutorService.java:406)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.lambda$run$0(PassExecutorService.java:382)
at com.intellij.openapi.application.impl.ReadMostlyRWLock.executeByImpatientReader(ReadMostlyRWLock.java:174)
at com.intellij.openapi.application.impl.ApplicationImpl.executeByImpatientReader(ApplicationImpl.java:181)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:380)
at com.intellij.concurrency.JobLauncherImpl$VoidForkJoinTask$1.exec(JobLauncherImpl.java:184)
at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290)
at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020)
at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656)
at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594)
at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183)