Fatal error: Uncaught Error: Class "MediaWiki\Extension\AbuseFilter\Filter\ExistingFilter" not found in /home/floten1/q.tenbergen.ca/extensions/AbuseFilter/includes/Filter/HistoryFilter.php:8 Stack trace: #0 {main} thrown in /home/floten1/q.tenbergen.ca/extensions/AbuseFilter/includes/Filter/HistoryFilter.php on line 8