Null pointer exception in com.mendix.storage.localfilesystem.internal.LocalFileSystemStore

1
We are getting a nullpointer exception when we receive files via Webservices, but we're unable to make sense of the stacktraces. We receive files over integration, but get the following null pointer exception: Advanced stacktrace: at com.mendix.modules.microflowengine.MicroflowUtil.processException(MicroflowUtil.java:144) Caused by: com.mendix.core.CoreRuntimeException: com.mendix.core.CoreRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: java.lang.NullPointerException at com.mendix.integration.xmlimporter.XmlImporter.importXmlStream(XmlImporter.java:103) Caused by: com.mendix.core.CoreRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: java.lang.NullPointerException at com.mendix.core.actionmanagement.ActionManager.executeInTransactionSync(ActionManager.java:167) Caused by: com.mendix.systemwideinterfaces.MendixRuntimeException: java.lang.NullPointerException at com.mendix.core.actionmanagement.ActionManager.executeSync(ActionManager.java:202) Caused by: java.lang.NullPointerException at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:36) Caused by: null at com.mendix.storage.localfilesystem.internal.LocalFileSystemStore.com$mendix$storage$localfilesystem$internal$LocalFileSystemStore$$toFile$1(LocalFileSystemStore.scala:67) at com.mendix.storage.localfilesystem.internal.LocalFileSystemStore$$anonfun$findFile$1$1.apply(LocalFileSystemStore.scala:77) at com.mendix.storage.localfilesystem.internal.LocalFileSystemStore$$anonfun$findFile$1$1.apply(LocalFileSystemStore.scala:77) at scala.collection.immutable.Stream.map(Stream.scala:379) at com.mendix.storage.localfilesystem.internal.LocalFileSystemStore.findFile$1(LocalFileSystemStore.scala:77) at com.mendix.storage.localfilesystem.internal.LocalFileSystemStore.store(LocalFileSystemStore.scala:95) at com.mendix.filedocumentprocessor.internal.FileDocumentProcessorImpl.writeFile(FileDocumentProcessorImpl.java:188) at com.mendix.filedocumentprocessor.internal.FileDocumentProcessorImpl.storeFileDocument(FileDocumentProcessorImpl.java:120) at com.mendix.core.objectmanagement.member.MendixBinary.commitValueAsFileDocument(MendixBinary.java:164) at com.mendix.core.action.user.CommitAction.com$mendix$core$action$user$CommitAction$$postProcess$1(CommitAction.scala:86) at com.mendix.core.action.user.CommitAction$$anonfun$commit$2.apply(CommitAction.scala:72) at com.mendix.core.action.user.CommitAction$$anonfun$commit$2.apply(CommitAction.scala:72) at scala.collection.immutable.List.foreach(List.scala:383) at com.mendix.core.action.user.CommitAction.commit(CommitAction.scala:72) at com.mendix.core.action.user.CommitAction.commitPersistableObjects(CommitAction.scala:51) at com.mendix.core.action.user.CommitAction.executeAction(CommitAction.scala:39) at com.mendix.core.action.user.CommitAction.executeAction(CommitAction.scala:20) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:49) at com.mendix.core.actionmanagement.CoreAction.doCall(CoreAction.java:261) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:249) at com.mendix.core.actionmanagement.ActionManager$1.execute(ActionManager.java:192) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.core.actionmanagement.ActionManager.executeSync(ActionManager.java:198) at com.mendix.core.actionmanagement.ActionManager.executeInTransactionSync(ActionManager.java:160) at com.mendix.core.component.InternalCore.commitWithoutEvents(InternalCore.java:691) at com.mendix.core.component.InternalCore.commitWithoutEvents(InternalCore.java:671) at com.mendix.integration.xmlimporter.handlers.ObjectStorer.com$mendix$integration$xmlimporter$handlers$ObjectStorer$$storeInDatabase(ObjectStorer.scala:19) at com.mendix.integration.xmlimporter.handlers.ObjectStorer$$anonfun$commitBatches$1.apply(ObjectStorer.scala:15) at com.mendix.integration.xmlimporter.handlers.ObjectStorer$$anonfun$commitBatches$1.apply(ObjectStorer.scala:15) at scala.collection.mutable.HashMap$$anon$2$$anonfun$foreach$3.apply(HashMap.scala:108) at scala.collection.mutable.HashMap$$anon$2$$anonfun$foreach$3.apply(HashMap.scala:108) at scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230) at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40) at scala.collection.mutable.HashMap$$anon$2.foreach(HashMap.scala:108) at com.mendix.integration.xmlimporter.handlers.ObjectStorer.commitBatches(ObjectStorer.scala:15) at com.mendix.integration.xmlimporter.handlers.ObjectHandler.finish(ObjectHandler.java:291) at com.mendix.integration.xmlimporter.XMLStreamingHandler.endDocument(XMLStreamingHandler.java:208) at org.xml.sax.helpers.XMLFilterImpl.endDocument(Unknown Source) at com.sun.istack.XMLStreamReaderToContentHandler.handleEndDocument(XMLStreamReaderToContentHandler.java:171) at com.sun.istack.XMLStreamReaderToContentHandler.bridge(XMLStreamReaderToContentHandler.java:161) at com.sun.xml.ws.util.xml.StAXSource$1.parse(StAXSource.java:188) at com.sun.xml.ws.util.xml.StAXSource$1.parse(StAXSource.java:176) at com.mendix.integration.xmlimporter.XmlImporter.importXmlStream(XmlImporter.java:87) at com.mendix.integration.xmlimporter.XmlImporter.importXmlStream(XmlImporter.java:60) at com.mendix.integration.actions.microflow.CallWebServiceAction.mapSoapResponse(CallWebServiceAction.scala:156) at com.mendix.integration.actions.microflow.CallWebServiceAction.execute(CallWebServiceAction.scala:75) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:44) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:192) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:149) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:49) at com.mendix.core.actionmanagement.CoreAction.doCall(CoreAction.java:261) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:249) at com.mendix.core.actionmanagement.ActionManager$1.execute(ActionManager.java:192) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.core.actionmanagement.ActionManager.executeSync(ActionManager.java:198) at com.mendix.core.component.InternalCore.executeSync(InternalCore.java:206) at com.mendix.modules.microflowengine.actions.SubMicroflowAction.execute(SubMicroflowAction.scala:38) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:44) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:192) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:149) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:49) at com.mendix.core.actionmanagement.CoreAction.doCall(CoreAction.java:261) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:249) at com.mendix.core.actionmanagement.ActionManager$1.execute(ActionManager.java:192) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.core.actionmanagement.ActionManager.executeSync(ActionManager.java:198) at com.mendix.core.component.InternalCore.executeSync(InternalCore.java:206) at com.mendix.modules.microflowengine.actions.SubMicroflowAction.execute(SubMicroflowAction.scala:38) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:44) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:192) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:149) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:49) at com.mendix.core.actionmanagement.CoreAction.doCall(CoreAction.java:261) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:249) at com.mendix.core.actionmanagement.ActionManager$1.execute(ActionManager.java:192) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.core.actionmanagement.ActionManager.executeSync(ActionManager.java:198) at com.mendix.core.component.InternalCore.executeSync(InternalCore.java:206) at com.mendix.modules.microflowengine.actions.SubMicroflowAction.execute(SubMicroflowAction.scala:38) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:44) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:192) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:149) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:49) at com.mendix.core.actionmanagement.CoreAction.doCall(CoreAction.java:261) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:249) at com.mendix.core.actionmanagement.CustomActionMonitorImpl$$anonfun$run$1.apply(CustomMonitoredAction.scala:14) at com.mendix.core.session.Worker$$anonfun$receive$3$$anonfun$2$$anon$1.execute(ActionDispatching.scala:125) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.core.session.Worker$$anonfun$receive$3$$anonfun$2.apply(ActionDispatching.scala:127) at scala.util.Try$.apply(Try.scala:191) at com.mendix.core.session.Worker$$anonfun$receive$3.applyOrElse(ActionDispatching.scala:121) at akka.actor.Actor$class.aroundReceive(Actor.scala:465) at com.mendix.core.session.Worker.aroundReceive(ActionDispatching.scala:117) at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516) at akka.actor.ActorCell.invoke(ActorCell.scala:487) at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238) at akka.dispatch.Mailbox.run(Mailbox.scala:220) at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393) at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
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1 answers
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We changed the file upload and temp folder location, and the problem went away. I'm assuming it is some OS-level issue. Although the old location and new locations' security settings/permissions are identical, it didn't want to "find" files in the first location for loading the XML from the webservice payload. We're waiting to see if it might be due to a security policy on the server and requires a restart, but the issue is resolved for now.

answered