Fatal error: Uncaught Error: Class "MediaWiki\Api\ApiQueryBase" not found in C:\xampp\htdocs\extensions\CheckUser\src\Api\GlobalContributions\ApiQueryGlobalContributions.php:16 Stack trace: #0 {main} thrown in C:\xampp\htdocs\extensions\CheckUser\src\Api\GlobalContributions\ApiQueryGlobalContributions.php on line 16