Fatal error: Uncaught Error: Class "MediaWiki\Api\ApiQueryBase" not found in /usr/www/otte/public/sphunt1/extensions/CheckUser/src/Api/ApiQueryCheckUser.php:17 Stack trace: #0 {main} thrown in /usr/www/otte/public/sphunt1/extensions/CheckUser/src/Api/ApiQueryCheckUser.php on line 17