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