Fatal error: Uncaught Error: Interface "MediaWiki\Hook\SpecialContributionsBeforeMainOutputHook" not found in /usr/www/otte/public/sphunt1/extensions/CheckUser/src/HookHandler/ToolLinksHandler.php:27 Stack trace: #0 {main} thrown in /usr/www/otte/public/sphunt1/extensions/CheckUser/src/HookHandler/ToolLinksHandler.php on line 27