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Dear, While buiding an app for an information system, we have a survey which gives a certain enumeration. This should assign a 'Patient' to a certain 'Care Group'. While saving the request we get an in-app error and we don't know what is the problem.   This is the message in our Console: Message:  An error has occurred while handling the request. [User 'admin' with session id '1280ccfa-f000-4398-800a-2b6ad9982469' and roles 'Administrator']   This is the Stack trace message: com.mendix.modules.microflowengine.MicroflowException: requirement failed: Change object 'Patient' should not be null     at GGzE.SaveSurveyOutcomes (Change : 'Change 'Patient' (Referral_outcome)') Advanced stacktrace:     at com.mendix.modules.microflowengine.MicroflowUtil.processException(MicroflowUtil.java:143) Caused by: java.lang.IllegalArgumentException: requirement failed: Change object 'Patient' should not be null     at scala.Predef$.require(Predef.scala:224)     at com.mendix.modules.microflowengine.actions.mxobject.ChangeAction.execute(ChangeAction.scala:43)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:200)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:157)     at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:50)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:73)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:53)     at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:51)     at com.mendix.basis.actionmanagement.ActionManager$1.execute(ActionManager.java:170)     at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:33)     at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.java:174)     at com.mendix.basis.component.InternalCore.execute(InternalCore.java:531)     at com.mendix.webui.actions.client.ExecuteAction.execute(ExecuteAction.java:143)     at com.mendix.webui.requesthandling.ClientRequestHandler$$anonfun$handleRequest$1.apply$mcV$sp(ClientRequestHandler.scala:307)     at com.mendix.webui.requesthandling.ClientRequestHandler$$anonfun$handleRequest$1.apply(ClientRequestHandler.scala:293)     at com.mendix.webui.requesthandling.ClientRequestHandler$$anonfun$handleRequest$1.apply(ClientRequestHandler.scala:293)     at com.mendix.basis.actionmanagement.IMonitoredAction$$anon$1.execute(IMonitoredAction.scala:47)     at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:33)     at com.mendix.basis.actionmanagement.IMonitoredAction$class.monitor(IMonitoredAction.scala:49)     at com.mendix.webui.requesthandling.ClientRequestHandler$ClientMonitoredAction.monitor(ClientRequestHandler.scala:408)     at com.mendix.webui.requesthandling.ClientRequestHandler.handleRequest(ClientRequestHandler.scala:293)     at com.mendix.webui.requesthandling.ClientRequestHandler.handleActionWithSessionRequired(ClientRequestHandler.scala:235)     at com.mendix.webui.requesthandling.ClientRequestHandler.handleAction(ClientRequestHandler.scala:202)     at com.mendix.webui.requesthandling.ClientRequestHandler.liftedTree1$1(ClientRequestHandler.scala:101)     at com.mendix.webui.requesthandling.ClientRequestHandler.processRequest(ClientRequestHandler.scala:93)     at com.mendix.externalinterface.connector.RequestHandler.doProcessRequest(RequestHandler.java:40)     at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:70)     at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:67)     at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:33)     at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.java:73)     at com.mendix.basis.impl.MxRuntimeImpl.processRequest(MxRuntimeImpl.java:885)     at com.mendix.m2ee.appcontainer.server.handler.RuntimeHandler.handle(RuntimeHandler.java:41)     at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52)     at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)     at org.eclipse.jetty.server.Server.handle(Server.java:368)     at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)     at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:953)     at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1014)     at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:861)     at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240)     at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)     at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628)     at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)     at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)     at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)     at java.lang.Thread.run(Thread.java:748)   We hope you can help us out!

asked 2017-06-14

2 answers