Error: Ids should not be null

2
Hi, In our Mendix application we receive the error below dozens times per day. Do you know what could be causing the error? --- java.lang.IllegalArgumentException: Ids should not be null     at com.mendix.basis.component.InternalCoreBase.retrieveId(InternalCoreBase.java:991)     at com.mendix.basis.session.PersistentSession.<init>(PersistentSession.scala:30)     at com.mendix.basis.session.PersistentSession.<init>(PersistentSession.scala:38)     at com.mendix.basis.session.SessionFactory$.apply(SessionFactory.scala:55)     at com.mendix.basis.session.SessionFactory$.createPersistentSession(SessionFactory.scala:76)     at com.mendix.basis.session.SessionFactory.createPersistentSession(SessionFactory.scala)     at com.mendix.basis.session.SessionManager.getSessionById(SessionManager.java:234)     at com.mendix.webui.requesthandling.helpers.SessionHandling.$anonfun$getSessionFromRequestUnsafe$2(SessionHandling.scala:35)     at scala.Option.flatMap(Option.scala:188)     at com.mendix.webui.requesthandling.helpers.SessionHandling.getSessionFromRequestUnsafe(SessionHandling.scala:33)     at com.mendix.webui.requesthandling.helpers.SessionHandling.getSessionFromRequestUnsafe$(SessionHandling.scala:31)     at com.mendix.webui.actions.client.RegularClientAction.getSessionFromRequestUnsafe(RegularClientAction.scala:21)     at com.mendix.webui.requesthandling.helpers.SessionHandling.$anonfun$getSessionFromRequest$2(SessionHandling.scala:27)     at scala.Option.flatMap(Option.scala:188)     at com.mendix.webui.requesthandling.helpers.SessionHandling.getSessionFromRequest(SessionHandling.scala:25)     at com.mendix.webui.requesthandling.helpers.SessionHandling.getSessionFromRequest$(SessionHandling.scala:23)     at com.mendix.webui.actions.client.RegularClientAction.getSessionFromRequest(RegularClientAction.scala:21)     at com.mendix.webui.actions.client.RegularClientAction.execute(RegularClientAction.scala:30)     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$1.execute(MxRuntimeConnector.java:69)     at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32)     at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.java:75)     at com.mendix.basis.impl.MxRuntimeImpl.processRequest(MxRuntimeImpl.java:909)     at com.mendix.m2ee.appcontainer.server.handler.RuntimeHandler.service(RuntimeHandler.java:42)     at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)     at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:867)     at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:542)     at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)     at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588)     at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)     at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)     at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)     at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)     at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557)     at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)     at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)     at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)     at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)     at org.eclipse.jetty.server.Server.handle(Server.java:502)     at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)     at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)     at org.eclipse.jetty.io.AbstractConnection$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(Unknown Source) Kind regards, Hans Ganzeboom
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