An error has occurred while handling the request. [User 'demo_requestor' with session id '17d6cdc6-9c5f-4a71-812a-6edf4c7c1bb6' and roles 'Requestor']
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com.mendix.webui.WebUIException: Exception while retrieving data for list widget 'Expenses.Home.listView2' on page 'Expenses.Home'
at com.mendix.webui.actions.client.RetrieveByMicroflowAction.$anonfun$apply$2(RetrieveByMicroflowAction.scala:60)
Caused by: java.lang.IllegalArgumentException: requirement failed: path 'System.owner' does not refer to a valid association
at scala.Predef$.require(Predef.scala:277)
at com.mendix.basis.action.user.RetrieveByPathAction.<init>(RetrieveByPathAction.scala:21)
at com.mendix.basis.action.ActionFactory.createRetrieveByPathAction(ActionFactory.scala:322)
at com.mendix.basis.component.InternalCoreBase.retrieveByPath(InternalCoreBase.java:955)
at com.mendix.webui.schemas.FullObjectSchema.$anonfun$apply$1(FullObjectSchema.scala:31)
at scala.collection.TraversableLike.$anonfun$flatMap$1(TraversableLike.scala:240)
at scala.collection.Iterator.foreach(Iterator.scala:937)
at scala.collection.Iterator.foreach$(Iterator.scala:937)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1425)
at scala.collection.IterableLike.foreach(IterableLike.scala:70)
at scala.collection.IterableLike.foreach$(IterableLike.scala:69)
at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
at scala.collection.TraversableLike.flatMap(TraversableLike.scala:240)
at scala.collection.TraversableLike.flatMap$(TraversableLike.scala:237)
at scala.collection.AbstractTraversable.flatMap(Traversable.scala:104)
at com.mendix.webui.schemas.FullObjectSchema.withAssociated$1(FullObjectSchema.scala:30)
at com.mendix.webui.schemas.FullObjectSchema.apply(FullObjectSchema.scala:36)
at com.mendix.webui.actions.client.RetrieveByMicroflowAction.$anonfun$apply$9(RetrieveByMicroflowAction.scala:45)
at scala.collection.immutable.List.flatMap(List.scala:334)
at com.mendix.webui.actions.client.RetrieveByMicroflowAction.$anonfun$apply$2(RetrieveByMicroflowAction.scala:45)
at scala.util.Either.map(Either.scala:349)
at com.mendix.webui.actions.client.RetrieveByMicroflowAction.apply(RetrieveByMicroflowAction.scala:28)
at com.mendix.webui.actions.client.RetrieveByMicroflowAction.apply(RetrieveByMicroflowAction.scala:16)
at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$4(RegularClientAction.scala:46)
at com.mendix.webui.requesthandling.helpers.StateHandling.withState(StateHandling.scala:33)
at com.mendix.webui.requesthandling.helpers.StateHandling.withState$(StateHandling.scala:22)
at com.mendix.webui.actions.client.RegularClientAction.withState(RegularClientAction.scala:21)
at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$3(RegularClientAction.scala:44)
at scala.util.Try$.apply(Try.scala:209)
at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2(RegularClientAction.scala:44)
at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2$adapted(RegularClientAction.scala:42)
at com.mendix.webui.requesthandling.helpers.ContextHandling.$anonfun$inContext$4(ContextHandling.scala:41)
at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:12)
at com.mendix.basis.actionmanagement.IMonitoredAction$$anon$1.execute(IMonitoredAction.scala:47)
at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32)
at com.mendix.basis.actionmanagement.IMonitoredAction.monitor(IMonitoredAction.scala:49)
at com.mendix.basis.actionmanagement.IMonitoredAction.monitor$(IMonitoredAction.scala:25)
at com.mendix.webui.requesthandling.helpers.ContextHandling$ClientMonitoredAction.monitor(ContextHandling.scala:49)
at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:41)
at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:27)
at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:21)
at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:24)
at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:19)
at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:21)
at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$1(RegularClientAction.scala:42)
at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:12)
at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest(ProfileHandling.scala:14)
at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest$(ProfileHandling.scala:10)
at com.mendix.webui.actions.client.RegularClientAction.profileRequest(RegularClientAction.scala:21)
at com.mendix.webui.actions.client.RegularClientAction.execute(RegularClientAction.scala:39)
at com.mendix.webui.requesthandling.ClientRequestHandler.handleAction(ClientRequestHandler.scala:124)
at com.mendix.webui.requesthandling.ClientRequestHandler.processRequest(ClientRequestHandler.scala:101)
at com.mendix.externalinterface.connector.RequestHandler.doProcessRequest(RequestHandler.java:40)
at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:72)
at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:69)
at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32)
at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.java:75)
at com.mendix.basis.impl.MxRuntimeImpl.processRequest(MxRuntimeImpl.java:870)
at com.mendix.m2ee.appcontainer.server.handler.RuntimeHandler.service(RuntimeHandler.java:42)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:865)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:535)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1340)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1242)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.eclipse.jetty.server.Server.handle(Server.java:503)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)
at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
at java.lang.Thread.run(Thread.java:745)
I am a novice at Mendix and doing the learning paths. I am currently doing the “Create an App with Advanced Page Building” path. I have followed everything to the letter. After doing module 4.5.3, and running the app, I am getting the above error when I switch to the requestor and approver users. How can I fix this? I am using Modeler version 7.21.0.
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