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 GitHub by arodus
, 1 year ago
via GitHub by mcassiano
, 1 year ago
via Coderanch by Heena Agarwal, 1 year ago
This exception has no message.
via GitHub by ptahchiev
, 2 years ago
java.util.ConcurrentModificationException at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:346) at java.util.LinkedHashMap$KeyIterator.next(LinkedHashMap.java:366) at com.onesignal.OneSignalStateSynchronizer.generateJsonDiff(OneSignalStateSynchronizer.java:74) at com.onesignal.OneSignalStateSynchronizer.access$200(OneSignalStateSynchronizer.java:46) at com.onesignal.OneSignalStateSynchronizer$UserState.generateJsonDiff(OneSignalStateSynchronizer.java:263) at com.onesignal.OneSignalStateSynchronizer$UserState.access$000(OneSignalStateSynchronizer.java:197) at com.onesignal.OneSignalStateSynchronizer.syncUserState(OneSignalStateSynchronizer.java:476) at com.onesignal.OneSignalStateSynchronizer$NetworkHandlerThread$1.run(OneSignalStateSynchronizer.java:440) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:158) at android.os.HandlerThread.run(HandlerThread.java:61)