Fatal error: Uncaught Error: Class 'Doctrine\Common\EventArgs' not found in D:\workspaces\liZiPingBack\vendor\doctrine\persistence\src\Persistence\Event\LoadClassMetadataEventArgs.php:17 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\doctrine\persistence\src\Persistence\Event\LoadClassMetadataEventArgs.php on line 17