Fatal error: Uncaught Error: Class "Symfony\Component\Mailer\Exception\TransportException" not found in /var/www/html/app/vendor/symfony/mailer/Exception/UnexpectedResponseException.php:14
Stack trace:
#0 {main}
thrown in /var/www/html/app/vendor/symfony/mailer/Exception/UnexpectedResponseException.php on line 14