Hi everyone, I am currently using an API to retrieve information. I have the Call REST action on my microflow returning an object called $StudentInfo, followed by a decision to determine whether $StudentInfo is empty or not. If it's empty, I show a message saying "Student not found," but if it isn't empty I will show the next page displaying the students' data. However, I found one case where the API gives an empty response, but my app automatically shows the message "An error has occurred please contact your system administrator." The microflow just stopped instead of executing the decision. I put a breakpoint and saw that the microflow indeed just quit. Is there a workaround to this? Advanced stacktrace: at com.mendix.integration.actions.microflow.RestCallAction.execute(RestCallAction.scala:71) Caused by: java.lang.IllegalStateException: No content was received in response at com.mendix.integration.actions.ServiceCallResult$.importResponse$1(ServiceCallResult.scala:53) at com.mendix.integration.actions.ServiceCallResult$.apply(ServiceCallResult.scala:57) at com.mendix.integration.actions.microflow.RestCallAction.handleResponse(RestCallAction.scala:92) at com.mendix.integration.actions.microflow.RestCallAction.$anonfun$execute$4(RestCallAction.scala:66) at scala.util.Try$.apply(Try.scala:210) at com.mendix.integration.actions.microflow.RestCallAction.$anonfun$execute$3(RestCallAction.scala:66) at scala.util.Success.flatMap(Try.scala:258) at com.mendix.http.HttpExecutor$.withResponse(HttpExecutor.scala:23) at com.mendix.http.HttpExecutor$.request(HttpExecutor.scala:15) at com.mendix.integration.actions.microflow.RestCallAction.execute(RestCallAction.scala:65) at com.mendix.integration.actions.microflow.RestCallAction.execute(RestCallAction.scala:31) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.$anonfun$execute$1(MicroflowObject.scala:31) at scala.Option.flatMap(Option.scala:283) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.scala:28) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.$anonfun$executeAfterBreakingIfNecessary$2(MicroflowImpl.scala:167) at scala.Option.flatMap(Option.scala:283) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.scala:167) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.scala:114) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:63) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:48) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:54) at com.mendix.basis.actionmanagement.ActionManagerBase.lambda$executeSync$0(ActionManagerBase.java:151) at com.mendix.util.classloading.Runner.withContextClassLoader(Runner.java:19) at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:149) at com.mendix.basis.actionmanagement.MicroflowCallBuilderImpl.execute(MicroflowCallBuilderImpl.scala:41) at com.mendix.webui.actions.client.ExecuteMicroflowAction.runMicroflow(ExecuteMicroflowAction.scala:76) at com.mendix.webui.actions.client.ExecuteMicroflowAction.$anonfun$apply$3(ExecuteMicroflowAction.scala:42) at com.mendix.webui.actions.client.RegularClientAction$Helpers$.$anonfun$liftEither$1(RegularClientAction.scala:29) at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.$anonfun$apply$4(RegularClientAction.scala:55) at com.mendix.webui.requesthandling.helpers.StateHandling.withState(StateHandling.scala:37) at com.mendix.webui.requesthandling.helpers.StateHandling.withState$(StateHandling.scala:34) 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.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:43) at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:22) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$3(RegularClientAction.scala:109) at scala.util.Try$.apply(Try.scala:210) 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$5(ContextHandling.scala:45) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18) at com.mendix.basis.actionmanagement.ActionMonitoring$.$anonfun$monitor$1(ActionMonitoring.scala:49) at com.mendix.util.classloading.Runner.withContextClassLoader(Runner.java:19) at com.mendix.basis.actionmanagement.ActionMonitoring$.monitor(ActionMonitoring.scala:49) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:45) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:26) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:86) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:23) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:18) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:86) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$1(RegularClientAction.scala:107) at scala.runtime.java8.JFunction0$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:86) at com.mendix.webui.actions.client.RegularClientAction.execute(RegularClientAction.scala:104) at com.mendix.webui.requesthandling.ClientRequestHandler.handleAction(ClientRequestHandler.scala:106) at com.mendix.webui.requesthandling.ClientRequestHandler.processRequest(ClientRequestHandler.scala:79) at com.mendix.externalinterface.connector.RequestHandler.doProcessRequest(RequestHandler.java:35) at com.mendix.external.connector.MxRuntimeConnector.lambda$processRequest$0(MxRuntimeConnector.java:74) at com.mendix.util.classloading.Runner.withContextClassLoader(Runner.java:19) at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.java:73) at com.mendix.basis.impl.MxRuntimeImplBase.processRequest(MxRuntimeImplBase.java:834) at com.mendix.m2ee.appcontainer.server.handler.RuntimeServlet.service(RuntimeServlet.java:42) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:791) at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1626) at org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:228) at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193) at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1435) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1350) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.Server.handle(Server.java:516) at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:388) at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:633) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:380) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:279) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:383) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:882) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1036) at java.base/java.lang.Thread.run(Thread.java:834)
asked
Sheryl Tania
2 answers
1
Hey Sheryl,
I would recommend adding some custom error handling logic to your REST action. This should allow you to catch this error in the future and do something afterwards, like redirect the user to a specific page/display a message.