Unkown Error - Mendix Forum

Unkown Error

0

Hi All, 

I have an error raised when i click a button, I added a break point to the microflow called by this button but it’s not being triggered and i have this error:

com.mendix.core.CoreException: java.util.NoSuchElementException
    at com.mendix.basis.component.InternalCoreBase.executeAsync(InternalCoreBase.java:454)

Caused by: java.util.NoSuchElementException: null
    at java.util.ArrayList$Itr.next(ArrayList.java:854)
    at scala.collection.convert.Wrappers$JIteratorWrapper.next(Wrappers.scala:40)
    at scala.collection.IterableLike.head(IterableLike.scala:105)
    at scala.collection.IterableLike.head$(IterableLike.scala:104)
    at scala.collection.AbstractIterable.head(Iterable.scala:54)
    at com.mendix.basis.actionmanagement.BackgroundJobRegistry.xasInstanceId$lzycompute(BackgroundJobRegistry.scala:56)
    at com.mendix.basis.actionmanagement.BackgroundJobRegistry.xasInstanceId(BackgroundJobRegistry.scala:55)
    at com.mendix.basis.actionmanagement.BackgroundJobRegistry.register(BackgroundJobRegistry.scala:71)
    at com.mendix.basis.actionmanagement.AsyncExecution.<init>(AsyncExecution.scala:15)
    at com.mendix.basis.actionmanagement.ActionManager.executeWithAsyncId(ActionManager.scala:44)
    at com.mendix.basis.actionmanagement.ActionManager.executeWithAsyncId(ActionManager.scala:33)
    at com.mendix.basis.component.InternalCoreBase.executeWithAsyncId(InternalCoreBase.java:1541)
    at com.mendix.basis.component.InternalCoreBase.executeAsync(InternalCoreBase.java:452)
    at com.mendix.webui.actions.client.ExecuteMicroflowAction.runMicroflow(ExecuteMicroflowAction.scala:43)
    at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:32)
    at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:15)
    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$1.execute(MxRuntimeConnector.java:69)
    at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32)
    at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.java:75)
    at com.mendix.basis.impl.MxRuntimeImpl.processRequest(MxRuntimeImpl.java:872)
    at com.mendix.m2ee.appcontainer.server.handler.RuntimeHandler.service(RuntimeHandler.java:42)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:867)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:542)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.eclipse.jetty.server.Server.handle(Server.java:502)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)
    at org.eclipse.jetty.io.AbstractConnection$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:748)
 

asked
1 answers
0

First double check if your debugger is still connected (Debugger tab and then Connect). With the last Mendix versions I seem to lose the connection a lot so that either the breakpoint never triggers (and thus the error you are getting) or that the debugger did stop at the microflow only the modeler does not show that to you. Reconnecting again and suddenly you then are at the breakpoint.

Regards,

Ronald

 

answered