when i try to edit any page component and submit getting following message:
17.05.2018 05:23:24.969 *WARN* [sling-oak-observation-1178] org.apache.jackrabbit.oak.jcr.observation.ChangeProcessor Error while dispatching observation events for //*[11111b]@org.apache.sling.jcr.resource.internal.JcrResourceListener
java.lang.NullPointerException: null
at com.day.cq.personalization.impl.TeaserResourceEventHandler.isTeaserEvent(TeaserResourceEventHandler.java:321)
at com.day.cq.personalization.impl.TeaserResourceEventHandler.handleChange(TeaserResourceEventHandler.java:158)
at com.day.cq.personalization.impl.TeaserResourceEventHandler.onChange(TeaserResourceEventHandler.java:136)
at org.apache.sling.resourceresolver.impl.observation.BasicObservationReporter.reportChanges(BasicObservationReporter.java:211)
at org.apache.sling.jcr.resource.internal.JcrResourceListener.onEvent(JcrResourceListener.java:155)
at org.apache.jackrabbit.commons.observation.ListenerTracker$1.onEvent(ListenerTracker.java:190)
at org.apache.jackrabbit.oak.jcr.observation.ChangeProcessor.contentChanged(ChangeProcessor.java:507)
at org.apache.jackrabbit.oak.plugins.observation.FilteringDispatcher.contentChanged(FilteringDispatcher.java:53)
at org.apache.jackrabbit.oak.spi.commit.BackgroundObserver$1$1.call(BackgroundObserver.java:134)
at org.apache.jackrabbit.oak.spi.commit.BackgroundObserver$1$1.call(BackgroundObserver.java:128)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)