Fatal error: Uncaught Error: Class "MediaWiki\Rest\Handler\TransformHandler" not found in /var/www/html/w/includes/Rest/Handler/TransformHtmlToWikitextTitleHandler.php:21 Stack trace: #0 {main} thrown in /var/www/html/w/includes/Rest/Handler/TransformHtmlToWikitextTitleHandler.php on line 21