Fatal error: Uncaught Error: Class "MediaWiki\SpecialPage\SpecialPage" not found in /var/www/html/w/extensions/VisualEditor/includes/SpecialEditCheckHeadless.php:8 Stack trace: #0 {main} thrown in /var/www/html/w/extensions/VisualEditor/includes/SpecialEditCheckHeadless.php on line 8