Fatal error: Uncaught Error: Class "Symfony\Component\Mailer\Exception\InvalidArgumentException" not found in /home/zdpktgd/ptc/vendor.old/symfony/mailer/Exception/IncompleteDsnException.php:17 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/symfony/mailer/Exception/IncompleteDsnException.php on line 17