Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in D:\programs\xampp\htdocs\antares-backend\vendor\symfony\mailer\Test\TransportFactoryTestCase.php:29 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\antares-backend\vendor\symfony\mailer\Test\TransportFactoryTestCase.php on line 29