Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Exception' not found in /var/www/typo3/vendor/doctrine/dbal/lib/Doctrine/DBAL/Schema/SchemaException.php:13 Stack trace: #0 {main} thrown in /var/www/typo3/vendor/doctrine/dbal/lib/Doctrine/DBAL/Schema/SchemaException.php on line 13