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java.util.NoSuchElementException: 	at oracle.dbtools.metadata.persistence.PersistableObjectIterator.next(PersistableObjectIterator.java:131)	at oracle.dbtools.migration.workbench.core.navigator.nodes.MigrationProjectsFolderNode$2.doWork(MigrationProjectsFolderNode.java:123)	at oracle.dbtools.migration.workbench.core.navigator.nodes.MigrationProjectsFolderNode$2.doWork(MigrationProjectsFolderNode.java:116)	at oracle.dbtools.raptor.backgroundTask.RaptorTask.call(RaptorTask.java:193)	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)	at java.util.concurrent.FutureTask.run(FutureTask.java:138)	at oracle.dbtools.raptor.backgroundTask.RaptorTaskManager$RaptorFutureTask.run(RaptorTaskManager.java:515)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)	at java.util.concurrent.FutureTask.run(FutureTask.java:138)	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)	at java.lang.Thread.run(Thread.java:662)