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java.lang.NullPointerException: 	at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1122)	at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:308)	at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:536)	at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:228)	at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)	at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:521)	at oracle.jdeveloper.db.adapter.AbstractConnectionCreator.getConnection(AbstractConnectionCreator.java:153)	at oracle.dbtools.raptor.standalone.connection.RaptorConnectionCreator.getConnection(RaptorConnectionCreator.java:195)	at oracle.dbtools.raptor.dialogs.conn.ConnectionPrompt.promptForPassword(ConnectionPrompt.java:67)	at oracle.jdeveloper.db.adapter.DatabaseProvider.getConnection(DatabaseProvider.java:321)	at oracle.jdeveloper.db.adapter.DatabaseProvider.getConnection(DatabaseProvider.java:254)	at oracle.jdevimpl.db.adapter.CADatabaseFactory.createConnectionImpl(CADatabaseFactory.java:60)	at oracle.javatools.db.DatabaseFactory.createConnection(DatabaseFactory.java:534)	at oracle.javatools.db.DatabaseFactory.createDatabase(DatabaseFactory.java:208)	at oracle.jdeveloper.db.DatabaseConnections.getDatabase(DatabaseConnections.java:607)	at oracle.jdeveloper.db.DatabaseConnections.getDatabase(DatabaseConnections.java:562)	at oracle.dbtools.raptor.utils.Connections$ConnectionInfo.getDatabase(Connections.java:157)	at oracle.dbtools.raptor.utils.Connections.getConnection(Connections.java:986)	at oracle.dbtools.raptor.utils.Connections.getConnection(Connections.java:967)	at oracle.dbtools.raptor.navigator.DatabaseConnection.openConnectionImpl(DatabaseConnection.java:117)	at oracle.dbtools.raptor.navigator.AbstractConnectionNode.getConnection(AbstractConnectionNode.java:30)	at oracle.dbtools.raptor.navigator.ConnectionFilter.getFactory(ConnectionFilter.java:94)	at oracle.dbtools.raptor.navigator.ConnectionFilter$1.doWork(ConnectionFilter.java:119)	at oracle.dbtools.raptor.navigator.ConnectionFilter$1.doWork(ConnectionFilter.java:104)	at oracle.dbtools.raptor.backgroundTask.RaptorTask.call(RaptorTask.java:193)	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)	at java.util.concurrent.FutureTask.run(FutureTask.java:138)	at oracle.dbtools.raptor.backgroundTask.RaptorTaskManager$RaptorFutureTask.run(RaptorTaskManager.java:500)	at java.util.concurrent.Executors$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:619)