Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Platforms\AbstractPlatform' not found in C:\xampp\htdocs\dpbb\vendor\doctrine\dbal\src\Platforms\MySQLPlatform.php:39 Stack trace: #0 {main} thrown in C:\xampp\htdocs\dpbb\vendor\doctrine\dbal\src\Platforms\MySQLPlatform.php on line 39