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

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java.lang.Throwable:
at jetbrains.mps.smodel.persistence.def.ModelPersistence.getPersistence(ModelPersistence.java:107)
at jetbrains.mps.smodel.persistence.def.ModelPersistence.index(ModelPersistence.java:338)
at jetbrains.mps.persistence.DefaultModelPersistence.index(DefaultModelPersistence.java:209)
at jetbrains.mps.workbench.findusages.MPSModelsIndexer$ModelIndexer.map(MPSModelsIndexer.java:173)
at com.intellij.util.indexing.MapReduceIndex.update(MapReduceIndex.java:461)
at com.intellij.util.indexing.FileBasedIndexImpl.a(FileBasedIndexImpl.java:1631)
at com.intellij.util.indexing.FileBasedIndexImpl.a(FileBasedIndexImpl.java:1567)
at com.intellij.openapi.fileTypes.impl.FileTypeManagerImpl.freezeFileTypeTemporarilyIn(FileTypeManagerImpl.java:507)
at com.intellij.util.indexing.FileBasedIndexImpl.a(FileBasedIndexImpl.java:1528)
at com.intellij.util.indexing.FileBasedIndexImpl.indexFileContent(FileBasedIndexImpl.java:1513)
at com.intellij.util.indexing.UnindexedFilesUpdater.a(UnindexedFilesUpdater.java:107)
at com.intellij.openapi.project.CacheUpdateRunner$MyRunnable.a(CacheUpdateRunner.java:235)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1061)
at com.intellij.openapi.project.CacheUpdateRunner$MyRunnable.a(CacheUpdateRunner.java:252)
at com.intellij.openapi.progress.impl.CoreProgressManager$3.run(CoreProgressManager.java:179)
at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:568)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:519)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:164)
at com.intellij.openapi.project.CacheUpdateRunner$MyRunnable.run(CacheUpdateRunner.java:248)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

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