Fatal error: Uncaught Error: Class "Doctrine\DBAL\Event\TransactionEventArgs" not found in /home/bimmertest/BookStack/vendor/doctrine/dbal/src/Event/TransactionRollBackEventArgs.php:8 Stack trace: #0 {main} thrown in /home/bimmertest/BookStack/vendor/doctrine/dbal/src/Event/TransactionRollBackEventArgs.php on line 8