Fatal error: Uncaught Error: Class "Doctrine\DBAL\Schema\AbstractSchemaManager" not found in /home/melihata/public_html/vendor/doctrine/dbal/src/Schema/DB2SchemaManager.php:28 Stack trace: #0 {main} thrown in /home/melihata/public_html/vendor/doctrine/dbal/src/Schema/DB2SchemaManager.php on line 28