java.awt.HeadlessException: This exception has no message.

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java.awt.HeadlessException:
at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:121)
at java.awt.Window.(Window.java:274)
at java.awt.Frame.(Frame.java:401)
at HTTPClient.BasicCookieBox.(CookieModule.java:886)
at HTTPClient.DefaultCookiePolicyHandler.acceptCookie(CookieModule.java:793)
at HTTPClient.CookieModule.handleCookie(CookieModule.java:509)
at HTTPClient.CookieModule.responsePhase1Handler(CookieModule.java:429)
at HTTPClient.HTTPResponse.handleResponse(HTTPResponse.java:739)
at HTTPClient.HTTPConnection.enableSSLTunneling(HTTPConnection.java:3377)
at HTTPClient.HTTPConnection.doConnect(HTTPConnection.java:4047)
at HTTPClient.HTTPConnection.connect(HTTPConnection.java:4024)
at oracle.sysman.emSDK.emd.comm.EMDClient.authenticateHTTPConnection(EMDClient.java:1270)
at oracle.sysman.emSDK.emd.comm.EMDClient.getConnection(EMDClient.java:1195)
at oracle.sysman.emSDK.emd.comm.EMDClient.getConnection(EMDClient.java:1154)
at oracle.sysman.emSDK.emd.comm.EMDClient.getResponseForRequest(EMDClient.java:1526)
at oracle.sysman.emSDK.emd.comm.EMDClient.getTarget(EMDClient.java:1135)
at oracle.sysman.emSDK.emd.comm.EMDClient.getTarget(EMDClient.java:1143)
at oracle.sysman.emdrep.jobs.commands.SetMasterAgent.setMasterAgent(SetMasterAgent.java:332)
at oracle.sysman.emdrep.jobs.commands.SetMasterAgent.executeCommand(SetMasterAgent.java:680)
at oracle.sysman.emdrep.jobs.JobWorker.runCommand(Dispatcher.java:817)
at oracle.sysman.emdrep.jobs.JobWorker.run(Dispatcher.java:700)
at oracle.sysman.util.threadPoolManager.WorkerThread.run(Worker.java:260)

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