Fatal error: Uncaught Error: Class "MediaWikiIntegrationTestCase" not found in C:\xampp\htdocs\extensions\CheckUser\tests\phpunit\integration\Investigate\Utilities\DurationManagerTest.php:14 Stack trace: #0 {main} thrown in C:\xampp\htdocs\extensions\CheckUser\tests\phpunit\integration\Investigate\Utilities\DurationManagerTest.php on line 14