Fatal error: Uncaught Error: Class "MediaWiki\Extension\Math\Tests\MathWikibaseConnectorTestFactory" not found in C:\xampp\htdocs\extensions\Math\tests\phpunit\unit\PopupTest.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\extensions\Math\tests\phpunit\unit\PopupTest.php on line 21