Fatal error: Uncaught Error: Class "MediaWiki\Tests\SpecialPage\FormSpecialPageTestCase" not found in C:\xampp\htdocs\extensions\CheckUser\tests\phpunit\integration\Investigate\SpecialInvestigateTest.php:30 Stack trace: #0 {main} thrown in C:\xampp\htdocs\extensions\CheckUser\tests\phpunit\integration\Investigate\SpecialInvestigateTest.php on line 30