Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Event\SchemaEventArgs' not found in D:\svn\epic-site(사전예약)\default\vendor\doctrine\dbal\lib\Doctrine\DBAL\Event\SchemaAlterTableAddColumnEventArgs.php:15 Stack trace: #0 {main} thrown in D:\svn\epic-site(사전예약)\default\vendor\doctrine\dbal\lib\Doctrine\DBAL\Event\SchemaAlterTableAddColumnEventArgs.php on line 15