Fatal error: Uncaught Error: Class "MediaWiki\Extension\AbuseFilter\Filter\ExistingFilter" not found in /var/www/html/orian-wiki/extensions/AbuseFilter/includes/Filter/HistoryFilter.php:8 Stack trace: #0 {main} thrown in /var/www/html/orian-wiki/extensions/AbuseFilter/includes/Filter/HistoryFilter.php on line 8