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

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java.lang.NullPointerException:
at oracle.javatools.db.jdbc.JdbcDDLDatabase.registerBuilders(JdbcDDLDatabase.java:415)
at oracle.javatools.db.AbstractDatabase.(AbstractDatabase.java:127)
at oracle.javatools.db.AbstractDatabase.(AbstractDatabase.java:76)
at oracle.javatools.db.ddl.DDLDatabase.(DDLDatabase.java:49)
at oracle.javatools.db.jdbc.JdbcDDLDatabase.(JdbcDDLDatabase.java:59)
at oracle.javatools.db.sybase.AdaptiveServerDatabaseImpl.(AdaptiveServerDatabaseImpl.java:20)
at oracle.javatools.db.sybase.anywhere.AdaptiveServerAnywhereDatabaseImpl.(AdaptiveServerAnywhereDatabaseImpl.java:18)
at oracle.javatools.db.sybase.AdaptiveServerDatabaseFactory.createDatabaseImpl(AdaptiveServerDatabaseFactory.java:33)
at oracle.javatools.db.DatabaseFactory.createDatabaseImpl(DatabaseFactory.java:316)
at oracle.javatools.db.DatabaseFactory.createDatabase(DatabaseFactory.java:286)
at oracle.jdeveloper.db.DatabaseConnections.getDatabase(DatabaseConnections.java:833)
at oracle.dbtools.raptor.utils.Connections$ConnectionInfo.getDatabase(Connections.java:175)
at oracle.dbtools.raptor.utils.Connections.getConnection(Connections.java:1165)
at oracle.dbtools.raptor.utils.Connections.getConnection(Connections.java:1139)
at oracle.dbtools.raptor.navigator.db.DatabaseConnection.openConnectionImpl(DatabaseConnection.java:146)
at oracle.dbtools.raptor.navigator.db.AbstractConnectionNode.getConnection(AbstractConnectionNode.java:30)
at oracle.dbtools.raptor.navigator.db.impl.DatabaseTreeNode.getObjectFactory(DatabaseTreeNode.java:82)
at oracle.dbtools.raptor.navigator.db.impl.DatabaseTreeNode$LoadTask.doWork(DatabaseTreeNode.java:137)
at oracle.dbtools.raptor.navigator.db.impl.DatabaseTreeNode$LoadTask.doWork(DatabaseTreeNode.java:111)
at oracle.dbtools.raptor.backgroundTask.RaptorTask.call(RaptorTask.java:193)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at oracle.dbtools.raptor.backgroundTask.RaptorTaskManager$RaptorFutureTask.run(RaptorTaskManager.java:554)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)

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