Erreur à l'arrêt du serveur

Bonjour,

A chaque arrêt du serveur jonas 5.3.0 issu de l'archive tgz décompressée, les erreurs suivantes apparaissent dans les traces.
Pouvez vous m'aider, je précise que le démarrage du serveur n'affiche aucune erreur ni warn ?
Merci de votre aide

[ERROR] : The method unsetDataSourceService cannot be called : method not found

ERROR: Bundle org.ow2.jonas.web-container-tomcat-7.0-core [180] EventDispatcher: Error during dispatch. (java.lang.NullPointerException)
java.lang.NullPointerException
at org.apache.felix.ipojo.handlers.dependency.DependencyCallback.call(DependencyCallback.java:231)
at org.apache.felix.ipojo.handlers.dependency.Dependency.invokeCallback(Dependency.java:314)
at org.apache.felix.ipojo.handlers.dependency.Dependency.callUnbindMethod(Dependency.java:298)
at org.apache.felix.ipojo.handlers.dependency.Dependency.onServiceDeparture(Dependency.java:496)
at org.apache.felix.ipojo.util.DependencyModel.manageDeparture(DependencyModel.java:466)
at org.apache.felix.ipojo.util.DependencyModel.removedService(DependencyModel.java:424)
at org.apache.felix.ipojo.util.Tracker$Tracked.untrack(Tracker.java:753)
at org.apache.felix.ipojo.util.Tracker$Tracked.serviceChanged(Tracker.java:651)
at org.apache.felix.framework.util.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:932)
at org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:793)
at org.apache.felix.framework.util.EventDispatcher.fireServiceEvent(EventDispatcher.java:543)
at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:4260)
at org.apache.felix.framework.Felix.access$000(Felix.java:74)
at org.apache.felix.framework.Felix$1.serviceChanged(Felix.java:390)
at org.apache.felix.framework.ServiceRegistry.unregisterService(ServiceRegistry.java:148)
at org.apache.felix.framework.ServiceRegistrationImpl.unregister(ServiceRegistrationImpl.java:127)
at org.apache.felix.ipojo.handlers.providedservice.ProvidedService.unregisterService(ProvidedService.java:415)
at org.apache.felix.ipojo.handlers.providedservice.ProvidedServiceHandler.__M_stateChanged(ProvidedServiceHandler.java:501)
at org.apache.felix.ipojo.handlers.providedservice.ProvidedServiceHandler.stateChanged(ProvidedServiceHandler.java)
at org.apache.felix.ipojo.InstanceManager.setState(InstanceManager.java:548)
at org.apache.felix.ipojo.InstanceManager.stop(InstanceManager.java:437)
at org.apache.felix.ipojo.InstanceManager.dispose(InstanceManager.java:481)
at org.apache.felix.ipojo.IPojoFactory.stop(IPojoFactory.java:554)
at org.apache.felix.ipojo.Extender.closeManagementFor(Extender.java:181)
at org.apache.felix.ipojo.Extender.bundleChanged(Extender.java:153)
at org.apache.felix.framework.util.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:868)
at org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:789)
at org.apache.felix.framework.util.EventDispatcher.fireBundleEvent(EventDispatcher.java:514)
at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4244)
at org.apache.felix.framework.Felix.stopBundle(Felix.java:2351)
at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1214)
at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:295)
at java.lang.Thread.run(Thread.java:804)