Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via Google Groups by Jiří Kolb, 1 year ago
This exception has no message.
via Stack Overflow by attack
, 2 months ago
This exception has no message.
via GitHub by Siedlerchr
, 2 years ago
via by Unknown author, 2 years ago
java.lang.NullPointerException: 	at java.util.Objects.requireNonNull(	at org.graylog2.shared.system.activities.Activity.(	at org.graylog2.inputs.InputStateListener.inputStateChanged(	at sun.reflect.GeneratedMethodAccessor120.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(	at java.lang.reflect.Method.invoke(	at	at$SynchronizedSubscriber.invokeSubscriberMethod(	at$	at com.codahale.metrics.InstrumentedExecutorService$	at java.util.concurrent.ThreadPoolExecutor.runWorker(	at java.util.concurrent.ThreadPoolExecutor$	at