Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Event\SchemaEventArgs' not found in D:\workspaces\liZiPingBack\vendor\doctrine\dbal\src\Event\SchemaCreateTableEventArgs.php:15 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\doctrine\dbal\src\Event\SchemaCreateTableEventArgs.php on line 15