Fatal error: Uncaught Error: Class "Doctrine\DBAL\Event\SchemaEventArgs" not found in D:\Apache24\www\ys_gs1\back-end\vendor\doctrine\dbal\src\Event\SchemaCreateTableColumnEventArgs.php:16 Stack trace: #0 {main} thrown in D:\Apache24\www\ys_gs1\back-end\vendor\doctrine\dbal\src\Event\SchemaCreateTableColumnEventArgs.php on line 16