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I am evaluating Mendix by learning demo. Create an App with Advanced Page Building, I completed half of it, but when I try to run the demo local, it had error,  Do you have MPK file so that I can reference and find what is wrong.   When I click button save, following error show up, I asumed that at this time it should not insert data into DB, it should save data into session or somewhere, Persistence action should be at step3(finalize the request).  I struggled with the problem whole day, Please help   com.mendix.core.CoreRuntimeException: Failed to commit     at com.mendix.basis.component.CommitHandler.commit(CommitHandler.scala:151) Caused by: com.mendix.core.CoreRuntimeException: com.mendix.modules.microflowengine.MicroflowException: requirement failed: Change object 'Request' should not be null     at Expenses.ACO_RequestLine_CalculateTotalAmount (Change : 'Change 'Request' (TotalAmount)')     at {"before":[{}],"action":{"type":"CommitAction"},"after":[{}],"type":"EventExtendedAction"} Advanced stacktrace:     at com.mendix.basis.actionmanagement.ActionManagerBase.executeInTransactionSync(ActionManagerBase.java:123) Caused by: com.mendix.modules.microflowengine.MicroflowException: requirement failed: Change object 'Request' should not be null     at Expenses.ACO_RequestLine_CalculateTotalAmount (Change : 'Change 'Request' (TotalAmount)')     at {"before":[{}],"action":{"type":"CommitAction"},"after":[{}],"type":"EventExtendedAction"} Advanced stacktrace:     at com.mendix.modules.microflowengine.MicroflowUtil.processException(MicroflowUtil.java:152) Caused by: java.lang.IllegalArgumentException: requirement failed: Change object 'Request' should not be null     at scala.Predef$.require(Predef.scala:281)     at com.mendix.modules.microflowengine.actions.mxobject.ChangeAction.execute(ChangeAction.scala:40)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:215)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:165)     at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:71)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:49)     at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:54)     at com.mendix.basis.actionmanagement.ActionManagerBase$1.execute(ActionManagerBase.java:147)     at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32)     at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:152)     at com.mendix.basis.component.InternalCoreBase.executeSync(InternalCoreBase.java:382)     at com.mendix.basis.actionmanagement.SyncEventExtendedAction.executeAfterActionsSync(SyncEventExtendedAction.java:95)     at com.mendix.basis.actionmanagement.SyncEventExtendedAction.executeAction(SyncEventExtendedAction.java:47)     at com.mendix.basis.actionmanagement.EventExtendedAction.execute(EventExtendedAction.java:101)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:71)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:49)     at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:54)     at com.mendix.basis.actionmanagement.ActionManagerBase$1.execute(ActionManagerBase.java:150)     at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32)     at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:152)     at com.mendix.basis.actionmanagement.ActionManagerBase.executeInTransactionSync(ActionManagerBase.java:116)     at com.mendix.basis.component.CommitHandler.$anonfun$storeObjectsAndAutoCommittedObjects$1(CommitHandler.scala:189)     at scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:238)     at scala.collection.immutable.List.foreach(List.scala:392)     at scala.collection.TraversableLike.map(TraversableLike.scala:238)     at scala.collection.TraversableLike.map$(TraversableLike.scala:231)     at scala.collection.immutable.List.map(List.scala:298)     at com.mendix.basis.component.CommitHandler.storeObjectsAndAutoCommittedObjects(CommitHandler.scala:187)     at com.mendix.basis.component.CommitHandler.commit(CommitHandler.scala:125)     at com.mendix.basis.component.CommitHandler.commit$(CommitHandler.scala:109)     at com.mendix.basis.component.InternalCore.commit(InternalCore.scala:46)     at com.mendix.basis.component.CommitHandler.commitWithEvents(CommitHandler.scala:69)     at com.mendix.basis.component.CommitHandler.commit(CommitHandler.scala:49)     at com.mendix.basis.component.CommitHandler.commit$(CommitHandler.scala:48)     at com.mendix.basis.component.InternalCore.commit(InternalCore.scala:46)     at com.mendix.basis.component.CommitHandler.commit(CommitHandler.scala:25)     at com.mendix.basis.component.CommitHandler.commit$(CommitHandler.scala:25)     at com.mendix.basis.component.InternalCore.commit(InternalCore.scala:46)     at com.mendix.webui.actions.client.RegularClientActions$.commit(RegularClientActions.scala:37)     at com.mendix.webui.actions.client.RegularClientActionWiring.$anonfun$regularClientActionMap$1(RegularClientActionWiring.scala:18)     at com.mendix.webui.actions.client.RegularClientAction$Helpers$.$anonfun$liftEither$1(RegularClientAction.scala:29)     at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.$anonfun$apply$4(RegularClientAction.scala:55)     at com.mendix.webui.requesthandling.helpers.StateHandling.withState(StateHandling.scala:35)     at com.mendix.webui.requesthandling.helpers.StateHandling.withState$(StateHandling.scala:32)     at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.withState(RegularClientAction.scala:45)     at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.apply(RegularClientAction.scala:53)     at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.apply(RegularClientAction.scala:45)     at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$3(RegularClientAction.scala:109)     at scala.util.Try$.apply(Try.scala:213)     at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2(RegularClientAction.scala:109)     at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2$adapted(RegularClientAction.scala:107)     at com.mendix.webui.requesthandling.helpers.ContextHandling.$anonfun$inContext$5(ContextHandling.scala:47)     at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)     at com.mendix.basis.actionmanagement.IMonitoredAction$$anon$1.execute(IMonitoredAction.scala:47)     at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java     

asked 2020-03-12

1 answers