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java.lang.NullPointerException: 	at com.sap.tc.webdynpro.model.ejb.model.EJBGenericModelClassExecutable.setPropertiesForModelClass(EJBGenericModelClassExecutable.java:429)	at com.sap.tc.webdynpro.model.ejb.model.EJBGenericModelClassExecutable.fillReturnParameterToMc(EJBGenericModelClassExecutable.java:634)	at com.sap.tc.webdynpro.model.ejb.model.EJBGenericModelClassExecutable.execute(EJBGenericModelClassExecutable.java:135)	at com.test.testprog.testprogwebdynpro.main.Main.doLogin(Main.java:243)	at com.test.testprog.testprogwebdynpro.main.wdp.InternalMain.doLogin(InternalMain.java:213)	at com.test.testprog.testprogwebdynpro.main.LoginView.onActionButtonEinloggen(LoginView.java:189)	at com.test.testprog.testprogwebdynpro.main.wdp.InternalLoginView.wdInvokeEventHandler(InternalLoginView.java:139)	at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.invokeEventHandler(DelegatingView.java:131)	at com.sap.tc.webdynpro.progmodel.controller.Action.fire(Action.java:72)	at com.sap.tc.webdynpro.clientserver.phases.ProcessingEventPhase.doHandleActionEvent(ProcessingEventPhase.java:156)	at com.sap.tc.webdynpro.clientserver.phases.ProcessingEventPhase.execute(ProcessingEventPhase.java:91)	at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequestPartly(WindowPhaseModel.java:161)	at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.doProcessRequest(WindowPhaseModel.java:109)	at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequest(WindowPhaseModel.java:96)	at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.processRequest(WebDynproWindow.java:469)	at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:52)	at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.doExecute(ClientApplication.java:1431)	at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.doProcessing(ClientApplication.java:1251)	at com.sap.tc.webdynpro.serverimpl.core.sessionctx.AbstractExecutionContextDispatcher.delegateToApplicationDoProcessing(AbstractExecutionContextDispatcher.java:158)	at com.sap.tc.webdynpro.serverimpl.wdc.sessionctx.DispatchHandlerForAppProcessing.doService(DispatchHandlerForAppProcessing.java:35)	at com.sap.tc.webdynpro.serverimpl.wdc.sessionctx.AbstractDispatchHandler.service(AbstractDispatchHandler.java:116)	at com.sap.engine.services.servlets_jsp.server.deploy.impl.module.IRequestDispatcherImpl.dispatch(IRequestDispatcherImpl.java:93)	at com.sap.tc.webdynpro.serverimpl.wdc.sessionctx.ExecutionContextDispatcher.dispatchToApplicationDoProcessing(ExecutionContextDispatcher.java:114)	at com.sap.tc.webdynpro.serverimpl.core.sessionctx.AbstractExecutionContextDispatcher.dispatch(AbstractExecutionContextDispatcher.java:81)	at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.dispatch(ApplicationSession.java:507)	at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.dispatch(ApplicationSession.java:527)	at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doApplicationProcessingStandalone(ApplicationSession.java:458)	at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:249)	at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:699)	at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:231)	at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:231)	at com.sap.tc.webdynpro.serverimpl.core.sessionctx.AbstractExecutionContextDispatcher.delegateToRequestManager(AbstractExecutionContextDispatcher.java:205)	at com.sap.tc.webdynpro.serverimpl.wdc.sessionctx.DispatchHandlerForRequestManager.doService(DispatchHandlerForRequestManager.java:38)	at com.sap.tc.webdynpro.serverimpl.wdc.sessionctx.AbstractDispatchHandler.service(AbstractDispatchHandler.java:116)	at com.sap.engine.services.servlets_jsp.server.deploy.impl.module.IRequestDispatcherImpl.dispatch(IRequestDispatcherImpl.java:93)	at com.sap.tc.webdynpro.serverimpl.wdc.sessionctx.ExecutionContextDispatcher.dispatchToRequestManager(ExecutionContextDispatcher.java:140)	at com.sap.tc.webdynpro.serverimpl.core.sessionctx.AbstractExecutionContextDispatcher.dispatch(AbstractExecutionContextDispatcher.java:93)	at com.sap.tc.webdynpro.serverimpl.core.sessionctx.AbstractExecutionContextDispatcher.dispatch(AbstractExecutionContextDispatcher.java:105)	at com.sap.tc.webdynpro.serverimpl.core.AbstractDispatcherServlet.doContent(AbstractDispatcherServlet.java:87)	at com.sap.tc.webdynpro.serverimpl.core.AbstractDispatcherServlet.doPost(AbstractDispatcherServlet.java:61)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)	at com.sap.engine.services.servlets_jsp.server.Invokable.invoke(Invokable.java:66)	at com.sap.engine.services.servlets_jsp.server.Invokable.invoke(Invokable.java:32)	at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:431)	at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:289)	at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:387)	at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:376)	at com.sap.engine.services.servlets_jsp.filters.ServletSelector.process(ServletSelector.java:85)	at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:71)	at com.sap.engine.services.servlets_jsp.filters.ApplicationSelector.process(ApplicationSelector.java:160)	at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:71)	at com.sap.engine.services.httpserver.filters.WebContainerInvoker.process(WebContainerInvoker.java:67)	at com.sap.engine.services.httpserver.chain.HostFilter.process(HostFilter.java:9)	at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:71)	at com.sap.engine.services.httpserver.filters.ResponseLogWriter.process(ResponseLogWriter.java:60)	at com.sap.engine.services.httpserver.chain.HostFilter.process(HostFilter.java:9)	at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:71)	at com.sap.engine.services.httpserver.filters.DefineHostFilter.process(DefineHostFilter.java:27)	at com.sap.engine.services.httpserver.chain.ServerFilter.process(ServerFilter.java:12)	at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:71)	at com.sap.engine.services.httpserver.filters.MonitoringFilter.process(MonitoringFilter.java:29)	at com.sap.engine.services.httpserver.chain.ServerFilter.process(ServerFilter.java:12)	at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:71)	at com.sap.engine.services.httpserver.server.Processor.chainedRequest(Processor.java:309)	at com.sap.engine.services.httpserver.server.Processor$FCAProcessorThread.run(Processor.java:222)	at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)	at java.security.AccessController.doPrivileged(Native Method)	at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:152)	at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:247)