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

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java.lang.NullPointerException:
at oracle.javatools.db.jdbc.JdbcDDLDatabase.registerBuilders(JdbcDDLDatabase.java:451)
at oracle.javatools.db.AbstractDatabase.(AbstractDatabase.java:85)
at oracle.javatools.db.ddl.DDLDatabase.(DDLDatabase.java:50)
at oracle.javatools.db.jdbc.JdbcDDLDatabase.(JdbcDDLDatabase.java:71)
at oracle.javatools.db.sybase.AdaptiveServerDatabaseImpl.(AdaptiveServerDatabaseImpl.java:106)
at oracle.javatools.db.sybase.AdaptiveServerAnywhereDatabaseImpl.(AdaptiveServerAnywhereDatabaseImpl.java:150)
at oracle.javatools.db.sybase.AdaptiveServerDatabaseFactory.createDatabaseImpl(AdaptiveServerDatabaseFactory.java:52)
at oracle.javatools.db.DatabaseFactory.createDatabaseImpl(DatabaseFactory.java:231)
at oracle.javatools.db.DatabaseFactory.createDatabase(DatabaseFactory.java:212)
at oracle.jdeveloper.db.DatabaseConnections.getDatabase(DatabaseConnections.java:607)
at oracle.dbtools.raptor.utils.Connections$ConnectionInfo.getDatabase(Connections.java:156)
at oracle.dbtools.raptor.utils.Connections.getConnection(Connections.java:1043)
at oracle.dbtools.raptor.utils.Connections.getConnection(Connections.java:1024)
at oracle.dbtools.raptor.navigator.DatabaseConnection.openConnectionImpl(DatabaseConnection.java:115)
at oracle.dbtools.raptor.navigator.AbstractConnectionNode.getConnection(AbstractConnectionNode.java:30)
at oracle.dbtools.raptor.navigator.DatabaseNavigatorController.connect(DatabaseNavigatorController.java:607)
at oracle.dbtools.raptor.navigator.DatabaseNavigatorController.handleEvent(DatabaseNavigatorController.java:240)
at oracle.ide.controller.IdeAction.performAction(IdeAction.java:529)
at oracle.ide.controller.IdeAction.actionPerformedImpl(IdeAction.java:884)
at oracle.ide.controller.IdeAction.actionPerformed(IdeAction.java:501)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:809)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:850)
at java.awt.Component.processMouseEvent(Component.java:6290)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6055)
at java.awt.Container.processEvent(Container.java:2039)
at java.awt.Component.dispatchEventImpl(Component.java:4653)
at java.awt.Container.dispatchEventImpl(Container.java:2097)
at java.awt.Component.dispatchEvent(Component.java:4481)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4575)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4236)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4166)
at java.awt.Container.dispatchEventImpl(Container.java:2083)
at java.awt.Window.dispatchEventImpl(Window.java:2482)
at java.awt.Component.dispatchEvent(Component.java:4481)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:648)
at java.awt.EventQueue.access$000(EventQueue.java:84)
at java.awt.EventQueue$1.run(EventQueue.java:607)
at java.awt.EventQueue$1.run(EventQueue.java:605)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
at java.awt.EventQueue$2.run(EventQueue.java:621)
at java.awt.EventQueue$2.run(EventQueue.java:619)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:618)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

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