Fatal error: Uncaught Error: Class "Doctrine\DBAL\Driver\AbstractException" not found in /home/bimmertest/BookStack/vendor/doctrine/dbal/src/Driver/IBMDB2/Exception/ConnectionFailed.php:17 Stack trace: #0 {main} thrown in /home/bimmertest/BookStack/vendor/doctrine/dbal/src/Driver/IBMDB2/Exception/ConnectionFailed.php on line 17