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java.lang.NullPointerException: 	at org.eclipse.smarthome.core.thing.internal.ThingManager.thingUpdated(ThingManager.java:542)	at org.eclipse.smarthome.core.thing.internal.ThingRegistryImpl.notifyTrackers(ThingRegistryImpl.java:227)	at org.eclipse.smarthome.core.thing.internal.ThingRegistryImpl.notifyListenersAboutUpdatedElement(ThingRegistryImpl.java:150)	at org.eclipse.smarthome.core.thing.internal.ThingRegistryImpl.notifyListenersAboutUpdatedElement(ThingRegistryImpl.java:1)	at org.eclipse.smarthome.core.common.registry.AbstractRegistry.updated(AbstractRegistry.java:167)	at org.eclipse.smarthome.core.common.registry.AbstractProvider.notifyListeners(AbstractProvider.java:57)	at org.eclipse.smarthome.core.common.registry.AbstractProvider.notifyListenersAboutUpdatedElement(AbstractProvider.java:82)	at org.eclipse.smarthome.model.thing.internal.GenericThingProvider.access$4(GenericThingProvider.java:1)	at org.eclipse.smarthome.model.thing.internal.GenericThingProvider$18.apply(GenericThingProvider.java:923)	at org.eclipse.smarthome.model.thing.internal.GenericThingProvider$18.apply(GenericThingProvider.java:1)	at org.eclipse.xtext.xbase.lib.IteratorExtensions.forEach(IteratorExtensions.java:363)	at org.eclipse.xtext.xbase.lib.IterableExtensions.forEach(IterableExtensions.java:333)	at org.eclipse.smarthome.model.thing.internal.GenericThingProvider.createThingsFromModelForThingHandlerFactory(GenericThingProvider.java:933)	at org.eclipse.smarthome.model.thing.internal.GenericThingProvider.access$1(GenericThingProvider.java:887)	at org.eclipse.smarthome.model.thing.internal.GenericThingProvider$1$1.apply(GenericThingProvider.java:228)	at org.eclipse.smarthome.model.thing.internal.GenericThingProvider$1$1.apply(GenericThingProvider.java:1)	at org.eclipse.xtext.xbase.lib.IteratorExtensions.forEach(IteratorExtensions.java:363)	at org.eclipse.xtext.xbase.lib.IterableExtensions.forEach(IterableExtensions.java:333)	at org.eclipse.smarthome.model.thing.internal.GenericThingProvider$1.apply(GenericThingProvider.java:231)	at org.eclipse.smarthome.model.thing.internal.GenericThingProvider$1.apply(GenericThingProvider.java:1)	at org.eclipse.smarthome.config.core.BundleProcessorVetoManager.applyActionFor(BundleProcessorVetoManager.java:121)	at org.eclipse.smarthome.model.thing.internal.GenericThingProvider$6.apply(GenericThingProvider.java:302)	at org.eclipse.smarthome.model.thing.internal.GenericThingProvider$6.apply(GenericThingProvider.java:1)	at org.eclipse.xtext.xbase.lib.IteratorExtensions.forEach(IteratorExtensions.java:363)	at org.eclipse.xtext.xbase.lib.IterableExtensions.forEach(IterableExtensions.java:333)	at org.eclipse.smarthome.model.thing.internal.GenericThingProvider.createThingsFromModel(GenericThingProvider.java:305)	at org.eclipse.smarthome.model.thing.internal.GenericThingProvider.modelChanged(GenericThingProvider.java:825)	at org.eclipse.smarthome.model.core.internal.ModelRepositoryImpl.notifyListeners(ModelRepositoryImpl.java:207)	at org.eclipse.smarthome.model.core.internal.ModelRepositoryImpl.addOrRefreshModel(ModelRepositoryImpl.java:120)	at org.eclipse.smarthome.model.core.internal.folder.FolderObserver.checkFile(FolderObserver.java:270)	at org.eclipse.smarthome.model.core.internal.folder.FolderObserver.access$1(FolderObserver.java:264)	at org.eclipse.smarthome.model.core.internal.folder.FolderObserver$WatchQueueReader.processWatchEvent(FolderObserver.java:145)	at org.eclipse.smarthome.core.service.AbstractWatchQueueReader.run(AbstractWatchQueueReader.java:122)	at java.lang.Thread.run(Thread.java:745)