Fatal error: Uncaught Error: Class "Symfony\Component\Mailer\Test\AbstractTransportFactoryTestCase" not found in /home/tamassri.helioho.st/httpdocs/vendor/symfony/mailer/Test/TransportFactoryTestCase.php:29 Stack trace: #0 {main} thrown in /home/tamassri.helioho.st/httpdocs/vendor/symfony/mailer/Test/TransportFactoryTestCase.php on line 29