Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Schema\Comparator' not found in D:\workspaces\liZiPingBack\vendor\doctrine\dbal\src\Platforms\SQLServer\Comparator.php:14 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\doctrine\dbal\src\Platforms\SQLServer\Comparator.php on line 14