Fatal error: Uncaught Error: Interface "MediaWiki\Storage\Hook\RevisionDataUpdatesHook" not found in /usr/www/otte/public/sphunt1/extensions/DiscussionTools/includes/Hooks/DataUpdatesHooks.php:21 Stack trace: #0 {main} thrown in /usr/www/otte/public/sphunt1/extensions/DiscussionTools/includes/Hooks/DataUpdatesHooks.php on line 21