Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Platforms\AbstractPlatform' not found in E:\xampp\htdocs\www\yunwei\qr251\vendor\doctrine\dbal\src\Platforms\PostgreSQLPlatform.php:43 Stack trace: #0 {main} thrown in E:\xampp\htdocs\www\yunwei\qr251\vendor\doctrine\dbal\src\Platforms\PostgreSQLPlatform.php on line 43