I am using the same code in below URL: aem63app-repo/SampleJCREvent.java at master · arunpatidar02/aem63app-repo · GitHub
19.04.2019 14:44:08.222 *ERROR* [sling-oak-observation-10] com.splunk.www.listeners.SampleJCREvent 12
javax.jcr.ItemNotFoundException: 12
at org.apache.jackrabbit.oak.jcr.session.PropertyImpl$8.perform(PropertyImpl.java:385) [org.apache.jackrabbit.oak-jcr:1.8.7]
at org.apache.jackrabbit.oak.jcr.session.PropertyImpl$8.perform(PropertyImpl.java:374) [org.apache.jackrabbit.oak-jcr:1.8.7]
at org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.perform(SessionDelegate.java:208) [org.apache.jackrabbit.oak-jcr:1.8.7]
at org.apache.jackrabbit.oak.jcr.session.ItemImpl.perform(ItemImpl.java:112) [org.apache.jackrabbit.oak-jcr:1.8.7]
at org.apache.jackrabbit.oak.jcr.session.PropertyImpl.getProperty(PropertyImpl.java:374) [org.apache.jackrabbit.oak-jcr:1.8.7]
at com.splunk.www.listeners.SampleJCREvent.onEvent(SampleJCREvent.java:100) [corp.splunk.com.wmd-app-splunkcom.core:1.0.0.SNAPSHOT]
at org.apache.jackrabbit.commons.observation.ListenerTracker$1.onEvent(ListenerTracker.java:190) [org.apache.jackrabbit.jackrabbit-jcr-commons:2.16.3]
at org.apache.jackrabbit.oak.jcr.observation.ChangeProcessor.contentChanged(ChangeProcessor.java:508) [org.apache.jackrabbit.oak-jcr:1.8.7]
at org.apache.jackrabbit.oak.plugins.observation.FilteringDispatcher.contentChanged(FilteringDispatcher.java:53) [org.apache.jackrabbit.oak-core:1.8.7]
at org.apache.jackrabbit.oak.spi.commit.BackgroundObserver$1$1.call(BackgroundObserver.java:128) [org.apache.jackrabbit.oak-store-spi:1.8.7]
at org.apache.jackrabbit.oak.spi.commit.BackgroundObserver$1$1.call(BackgroundObserver.java:122) [org.apache.jackrabbit.oak-store-spi:1.8.7]
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)