Fatal error: Uncaught Error: Class 'Symfony\Component\Mailer\Exception\TransportException' not found in /home/discovergreece/public_html/vendor/symfony/mailer/Exception/UnexpectedResponseException.php:14 Stack trace: #0 {main} thrown in /home/discovergreece/public_html/vendor/symfony/mailer/Exception/UnexpectedResponseException.php on line 14