[2020-04-02 04:56:13:420] [WARNING ] [       pool-1-thread-4 ] EventBusImplementation.lambda$doFireThreadPerHandler$1(): Exception during execution of event: tigase.pubsub.modules.PresenceCollectorModule.CapsChangeEvent
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
	at tigase.eventbus.impl.ReflectEventListenerHandler.dispatch(ReflectEventListenerHandler.java:48)
	at tigase.eventbus.impl.EventBusImplementation.lambda$doFireThreadPerHandler$1(EventBusImplementation.java:306)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.reflect.InvocationTargetException
	at jdk.internal.reflect.GeneratedMethodAccessor56.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at tigase.eventbus.impl.ReflectEventListenerHandler.dispatch(ReflectEventListenerHandler.java:46)
	... 4 more
Caused by: java.lang.NullPointerException
	at tigase.pubsub.modules.PublishItemModule.publishLastItem(PublishItemModule.java:395)
	at tigase.pubsub.modules.PublishItemModule.publishLastItem(PublishItemModule.java:654)
	at tigase.pubsub.modules.PublishItemModule.onCapsChange(PublishItemModule.java:640)
	... 8 more