Fatal error: Uncaught Error: Class "MediaWiki\Api\ApiQueryBase" not found in C:\xampp\htdocs\extensions\OATHAuth\src\Api\Module\ApiQueryOATH.php:39 Stack trace: #0 {main} thrown in C:\xampp\htdocs\extensions\OATHAuth\src\Api\Module\ApiQueryOATH.php on line 39