Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Schema\AbstractSchemaManager' not found in /home/app/htdocs/message_gateway/vendor/doctrine/dbal/lib/Doctrine/DBAL/Schema/SqliteSchemaManager.php:35 Stack trace: #0 {main} thrown in /home/app/htdocs/message_gateway/vendor/doctrine/dbal/lib/Doctrine/DBAL/Schema/SqliteSchemaManager.php on line 35