Fatal error: Uncaught Error: Class "Doctrine\DBAL\Platforms\AbstractMySQLPlatform" not found in E:\xampp\htdocs\stms\vendor\doctrine\dbal\src\Platforms\MySQLPlatform.php:9 Stack trace: #0 {main} thrown in E:\xampp\htdocs\stms\vendor\doctrine\dbal\src\Platforms\MySQLPlatform.php on line 9