Fatal error: Uncaught Error: Class "Doctrine\DBAL\Event\SchemaEventArgs" not found in C:\Xampp\www\0050467\ims-mobile\vendor_\doctrine\dbal\lib\Doctrine\DBAL\Event\SchemaColumnDefinitionEventArgs.php:13 Stack trace: #0 {main} thrown in C:\Xampp\www\0050467\ims-mobile\vendor_\doctrine\dbal\lib\Doctrine\DBAL\Event\SchemaColumnDefinitionEventArgs.php on line 13