Fatal error: Uncaught Error: Class 'Symfony\Component\Mailer\Test\AbstractTransportFactoryTestCase' not found in /home/jsslnvvr/public_html/vendor/symfony/mailer/Test/TransportFactoryTestCase.php:26 Stack trace: #0 {main} thrown in /home/jsslnvvr/public_html/vendor/symfony/mailer/Test/TransportFactoryTestCase.php on line 26