Internal server Error: An error occurred while executing an action of ActionButton

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Getting this Error in my Application console, wanted to identify the issue and a solution.   com.mendix.webui.WebUIException: Exception while executing runtime operation    at com.mendix.webui.actions.client.RuntimeOperationAction.$anonfun$apply$1(RuntimeOperationAction.scala:54) Caused by: com.mendix.modules.microflowengine.MicroflowException: Failed to evaluate expression, error occurred on line 1, character 1$User_Master/Management_Code + 1^    at BD_Tender.ACT_Add_Management_Head (CreateAndChange : 'Create Management_Head(Management_Code)') Advanced stacktrace:    at com.mendix.languages.mxexpressions.MxExpressionImpl.evaluate(MxExpressionImpl.scala:32) Caused by: com.mendix.languages.expressions.ExpressionException: Left and right hand side of binary expression should not be empty    at com.mendix.languages.expressions.Expr.evaluate(Expr.scala:16) Caused by: java.lang.IllegalArgumentException: Left and right hand side of binary expression should not be empty    at com.mendix.languages.expressions.BinaryExpr$$anonfun$error$1.applyOrElse(BinaryExpr.scala:50)    at com.mendix.languages.expressions.BinaryExpr$$anonfun$error$1.applyOrElse(BinaryExpr.scala:48)    at scala.runtime.AbstractPartialFunction.apply(AbstractPartialFunction.scala:35)    at com.mendix.languages.expressions.BinaryExpr$$anonfun$add$1.applyOrElse(BinaryExpr.scala:89)    at com.mendix.languages.expressions.BinaryExpr$$anonfun$add$1.applyOrElse(BinaryExpr.scala:89)    at com.mendix.languages.expressions.BinaryExpr.evaluateExpression(BinaryExpr.scala:32)    at com.mendix.languages.expressions.Expr.evaluate(Expr.scala:13)    at com.mendix.languages.mxexpressions.MxExpressionImpl.evaluate(MxExpressionImpl.scala:25)    at com.mendix.modules.microflowengine.actions.mxobject.ChangeItemsExecutor.$anonfun$executeChanges$1(ChangeItemsExecutor.scala:28)    at com.mendix.modules.microflowengine.actions.mxobject.ChangeItemsExecutor.$anonfun$newValues$2(ChangeItemsExecutor.scala:80)    at com.mendix.basis.action.user.Changer.$anonfun$changeMembers$3(Changer.scala:39)    at com.mendix.basis.action.user.Changer.$anonfun$changeMembers$3$adapted(Changer.scala:38)    at scala.collection.immutable.List.foreach(List.scala:333)    at com.mendix.basis.action.user.Changer.changeMembers(Changer.scala:38)    at com.mendix.basis.action.user.Changer.changeMembers$(Changer.scala:25)    at com.mendix.modules.microflowengine.actions.mxobject.ChangeAction.changeMembers(ChangeAction.scala:12)    at com.mendix.modules.microflowengine.actions.mxobject.ChangeItemsExecutor.executeChanges(ChangeItemsExecutor.scala:31)    at com.mendix.modules.microflowengine.actions.mxobject.ChangeItemsExecutor.executeChanges$(ChangeItemsExecutor.scala:20)    at com.mendix.modules.microflowengine.actions.mxobject.ChangeAction.executeChanges(ChangeAction.scala:12)    at com.mendix.modules.microflowengine.actions.mxobject.CreateChangeAction$$anonfun$1.applyOrElse(CreateChangeAction.scala:26)    at com.mendix.modules.microflowengine.actions.mxobject.CreateChangeAction$$anonfun$1.applyOrElse(CreateChangeAction.scala:24)    at scala.PartialFunction$Lifted.apply(PartialFunction.scala:338)    at scala.PartialFunction$Lifted.apply(PartialFunction.scala:334)    at scala.Option.collect(Option.scala:462)    at com.mendix.modules.microflowengine.actions.mxobject.CreateChangeAction.execute(CreateChangeAction.scala:24)    at com.mendix.modules.microflowengine.actions.mxobject.CreateChangeAction.execute(CreateChangeAction.scala:12)    at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.$anonfun$execute$1(MicroflowObject.scala:32)    at scala.Option.flatMap(Option.scala:283)    at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.scala:29)    at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.scala:176)    at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.scala:116)    at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:58)    at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:71)    at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:48)    at com.mendix.core.actionmanagement.internal.InternalCoreAction.call(InternalCoreAction.java:57)    at com.mendix.basis.actionmanagement.ActionManager.$anonfun$executeSync$2(ActionManager.scala:104)    at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20)    at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.scala:103)    at com.mendix.basis.actionmanagement.MicroflowCallBuilderImpl.execute(MicroflowCallBuilderImpl.scala:62)    at com.mendix.webui.actions.client.MicroflowRuntimeOperationExecutor.runMicroflow(MicroflowRuntimeOperationExecutor.scala:97)    at com.mendix.webui.actions.client.MicroflowRuntimeOperationExecutor.$anonfun$apply$5(MicroflowRuntimeOperationExecutor.scala:57)    at com.mendix.webui.actions.client.RegularClientAction$Helpers$.$anonfun$liftEither$1(RegularClientAction.scala:30)    at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.$anonfun$apply$4(RegularClientAction.scala:56)    at com.mendix.webui.requesthandling.helpers.StateHandling.withState(StateHandling.scala:46)    at com.mendix.webui.requesthandling.helpers.StateHandling.withState$(StateHandling.scala:43)    at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.withState(RegularClientAction.scala:46)    at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.apply(RegularClientAction.scala:54)    at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.apply(RegularClientAction.scala:46)    at com.mendix.webui.actions.client.MicroflowRuntimeOperationExecutor.apply(MicroflowRuntimeOperationExecutor.scala:58)    at com.mendix.webui.actions.client.RuntimeOperationAction.$anonfun$apply$1(RuntimeOperationAction.scala:49)    at scala.util.Either.flatMap(Either.scala:352)    at com.mendix.webui.actions.client.RuntimeOperationAction.apply(RuntimeOperationAction.scala:33)    at com.mendix.webui.actions.client.RuntimeOperationAction.apply(RuntimeOperationAction.scala:22)    at com.mendix.webui.actions.client.RegularClientAction$Helpers$.$anonfun$liftEither$1(RegularClientAction.scala:30)    at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$3(RegularClientAction.scala:120)    at scala.util.Try$.apply(Try.scala:210)    at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2(RegularClientAction.scala:120)    at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2$adapted(RegularClientAction.scala:118)    at com.mendix.webui.requesthandling.helpers.ContextHandling.$anonfun$inContext$7(ContextHandling.scala:58)    at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18)    at com.mendix.basis.actionmanagement.ActionMonitoring$.$anonfun$monitor$1(ActionMonitoring.scala:52)    at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20)    at com.mendix.basis.actionmanagement.ActionMonitoring$.monitor(ActionMonitoring.scala:52)    at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:58)    at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:32)    at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:94)    at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:29)    at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:21)    at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:94)    at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$1(RegularClientAction.scala:118)    at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18)    at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest(ProfileHandling.scala:14)    at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest$(ProfileHandling.scala:10)    at com.mendix.webui.actions.client.RegularClientAction.profileRequest(RegularClientAction.scala:94)    at com.mendix.webui.actions.client.RegularClientAction.execute(RegularClientAction.scala:115)    at com.mendix.webui.requesthandling.ClientRequestHandler.handleAction(ClientRequestHandler.scala:96)    at com.mendix.webui.requesthandling.ClientRequestHandler.processRequest(ClientRequestHandler.scala:69)    at com.mendix.externalinterface.connector.RequestHandler.doProcessRequest(RequestHandler.java:37)    at com.mendix.external.connector.MxRuntimeConnector.$anonfun$processRequest$1(MxRuntimeConnector.scala:54)    at com.mendix.external.connector.MxRuntimeConnector.$anonfun$processRequest$1$adapted(MxRuntimeConnector.scala:54)    at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20)    at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.scala:54)    at com.mendix.basis.impl.MxRuntimeImpl.processRequest(MxRuntimeImpl.scala:218)    at com.mendix.m2ee.appcontainer.server.handler.RuntimeServlet.service(RuntimeServlet.scala:40)    at javax.servlet.http.HttpServlet.service(HttpServlet.java:750)    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:764)    at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1665)    at org.eclipse.jetty.websocket.servlet.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:170)    at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)    at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:527)    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1570)    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1384)    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176)    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:484)    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1543)    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174)    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1306)    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129)    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)    at org.eclipse.jetty.server.Server.handle(Server.java:563)    at org.eclipse.jetty.server.HttpChannel.lambda$handle$0(HttpChannel.java:505)    at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:762)    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:497)    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:282)    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:314)    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)    at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)    at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:416)    at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:385)    at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:272)    at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.lambda$new$0(AdaptiveExecutionStrategy.java:140)    at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:411)    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:969)    at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1194)    at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1149)    at java.base/java.lang.Thread.run(Thread.java:829)
asked
1 answers
1

Hello IMTS Solutions,

 

The problem is that the system cannot evaluate the expression:

 

$User_Master/Management_Code + 1

 

In microflow:

 

ACT_Add_Management_Head

 

At the create action:

 

Management_Head

 

 

This probably has to do with that or the $user_master is empty or that the attribute $User_Master/Management_Code is empty.

 

So check this in your database or debug the process to see why it is empty

 

 

Hope this helps,

 

Good luck!

answered