Fatal error: Uncaught Error: Interface "SMW\MediaWiki\HookListener" not found in /var/www/html/extensions/SemanticMediaWiki/src/MediaWiki/Hooks/DeleteAccount.php:20 Stack trace: #0 {main} thrown in /var/www/html/extensions/SemanticMediaWiki/src/MediaWiki/Hooks/DeleteAccount.php on line 20