Fatal error: Uncaught Error: Interface "MediaWiki\Auth\Hook\LocalUserCreatedHook" not found in /var/www/html/extensions/DiscussionTools/includes/Hooks/PreferenceHooks.php:22 Stack trace: #0 {main} thrown in /var/www/html/extensions/DiscussionTools/includes/Hooks/PreferenceHooks.php on line 22