Fatal error: Uncaught Error: Interface "Symfony\Component\Mailer\Transport\TransportInterface" not found in /home/bimmertest/BookStack/vendor/ssddanbrown/symfony-mailer/Transport/Transports.php:24 Stack trace: #0 {main} thrown in /home/bimmertest/BookStack/vendor/ssddanbrown/symfony-mailer/Transport/Transports.php on line 24