Fatal error: Uncaught Error: Class "MediaWikiIntegrationTestCase" not found in C:\xampp\htdocs\extensions\CheckUser\tests\phpunit\integration\Api\Rest\Handler\UserInfoHandlerTest.php:18 Stack trace: #0 {main} thrown in C:\xampp\htdocs\extensions\CheckUser\tests\phpunit\integration\Api\Rest\Handler\UserInfoHandlerTest.php on line 18