Fatal error: Uncaught Error: Interface "MediaWiki\Output\Hook\OutputPageBeforeHTMLHook" not found in /var/www/html/w/extensions/Wikibase/repo/includes/Hooks/OutputPageBeforeHTMLHookHandler.php:52 Stack trace: #0 {main} thrown in /var/www/html/w/extensions/Wikibase/repo/includes/Hooks/OutputPageBeforeHTMLHookHandler.php on line 52