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

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java.lang.NullPointerException:
at oracle.jbo.jbotester.MainFrame.reconnect(MainFrame.java:722)
at oracle.jbo.jbotester.agent.ReconnectAgent.processTesterCommand(ReconnectAgent.java:20)
at oracle.jbo.jbotester.server.Server.handleCommand(Server.java:153)
at oracle.jbo.jbotester.server.ServerThread.processRequest(ServerThread.java:91)
at oracle.jbo.jbotester.server.ServerThread.processRequest(ServerThread.java:66)
at oracle.jbo.jbotester.server.ServerThread.run(ServerThread.java:42)

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