Fatal error: Uncaught Error: Class "Doctrine\DBAL\Event\SchemaEventArgs" not found in C:\mywamp\sites\allsite\microfinance2\vendor\doctrine\dbal\src\Event\SchemaDropTableEventArgs.php:12 Stack trace: #0 {main} thrown in C:\mywamp\sites\allsite\microfinance2\vendor\doctrine\dbal\src\Event\SchemaDropTableEventArgs.php on line 12