I see that timeout prints 0 in my case , so it never executed the code previous = locks.get().putIfAbsent(pageId, lock);
, for some reason the old app did not set a timeout, so after setting it to something meaningful the app works. Perhaps /** timeout value for acquiring a page lock */ private final Duration timeout; assigning it some default value here may be considered. -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/NullPointerException-in-running-Wicket-6-2-app-tp4653694p4653698.html Sent from the Users forum mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org