Внутренняя ошибка программа на Java

Заказывал программу на Java. Поменял название проекта и пр. в Idea.

И теперь выходит ошибка (ниже). Что это значит? Как убрать ошибку?

Error:Internal error: (java.lang.IllegalStateException) Duplicate key org.jetbrains.jps.model.module.impl.JpsModuleImpl@769e7ee8
java.lang.IllegalStateException: Duplicate key org.jetbrains.jps.model.module.impl.JpsModuleImpl@769e7ee8
    at java.util.stream.Collectors.lambda$throwingMerger$0(Collectors.java:133)
    at java.util.HashMap.merge(HashMap.java:1254)
    at java.util.stream.Collectors.lambda$toMap$58(Collectors.java:1320)
    at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)
    at java.util.Iterator.forEachRemaining(Iterator.java:116)
    at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
    at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
    at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
    at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
    at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
    at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
    at org.jetbrains.jps.maven.model.impl.MavenAnnotationProcessorTargetType.createLoader(MavenAnnotationProcessorTargetType.java:50)
    at org.jetbrains.jps.incremental.storage.BuildTargetTypeState.load(BuildTargetTypeState.java:66)
    at org.jetbrains.jps.incremental.storage.BuildTargetTypeState.<init>(BuildTargetTypeState.java:55)
    at org.jetbrains.jps.incremental.storage.BuildTargetsState.getTypeState(BuildTargetsState.java:110)
    at org.jetbrains.jps.incremental.storage.BuildTargetsState.getAverageBuildTime(BuildTargetsState.java:104)
    at org.jetbrains.jps.incremental.messages.BuildProgress.<init>(BuildProgress.java:70)
    at org.jetbrains.jps.incremental.IncProjectBuilder.runBuild(IncProjectBuilder.java:369)
    at org.jetbrains.jps.incremental.IncProjectBuilder.build(IncProjectBuilder.java:178)
    at org.jetbrains.jps.cmdline.BuildRunner.runBuild(BuildRunner.java:139)
    at org.jetbrains.jps.cmdline.BuildSession.runBuild(BuildSession.java:302)
    at org.jetbrains.jps.cmdline.BuildSession.run(BuildSession.java:135)
    at org.jetbrains.jps.cmdline.BuildMain$MyMessageHandler.lambda$channelRead0$0(BuildMain.java:228)
    at org.jetbrains.jps.service.impl.SharedThreadPoolImpl.lambda$executeOnPooledThread$0(SharedThreadPoolImpl.java:42)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)