Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Exception' not found in D:\workspaces\liZiPingBack\vendor\doctrine\dbal\src\Exception\InvalidLockMode.php:12 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\doctrine\dbal\src\Exception\InvalidLockMode.php on line 12