Fatal error: Uncaught Error: Class 'Doctrine\DBAL\DBALException' not found in /home/app/htdocs/message_gateway/vendor/doctrine/dbal/lib/Doctrine/DBAL/Exception.php:8 Stack trace: #0 {main} thrown in /home/app/htdocs/message_gateway/vendor/doctrine/dbal/lib/Doctrine/DBAL/Exception.php on line 8