Fatal error: Uncaught Error: Interface "MediaWiki\FileRepo\Hook\LocalFilePurgeThumbnailsHook" not found in /var/www/html/w/extensions/PdfHandler/includes/PdfHandlerHooks.php:26 Stack trace: #0 {main} thrown in /var/www/html/w/extensions/PdfHandler/includes/PdfHandlerHooks.php on line 26