Fatal error: Uncaught Error: Class 'Symfony\Component\Mailer\Exception\RuntimeException' not found in /home/szfwxvyz/data-a23/a23/data/old/vendor/symfony/mailer/Exception/TransportException.php:17 Stack trace: #0 {main} thrown in /home/szfwxvyz/data-a23/a23/data/old/vendor/symfony/mailer/Exception/TransportException.php on line 17