Fatal error: Uncaught Error: Class "Doctrine\DBAL\Exception\ConnectionException" not found in D:\Apache24\www\pesticide\备份\pesticide-back-end_bf\vendor\doctrine\dbal\src\Exception\ConnectionLost.php:8 Stack trace: #0 {main} thrown in D:\Apache24\www\pesticide\备份\pesticide-back-end_bf\vendor\doctrine\dbal\src\Exception\ConnectionLost.php on line 8