Fatal error: Uncaught Error: Interface "MediaWiki\Preferences\Hook\GetPreferencesHook" not found in /usr/www/otte/public/sphunt1/extensions/CheckUser/src/HookHandler/Preferences.php:19 Stack trace: #0 {main} thrown in /usr/www/otte/public/sphunt1/extensions/CheckUser/src/HookHandler/Preferences.php on line 19