Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Platforms\AbstractPlatform' not found in D:\workspaces\liZiPingBack\vendor\doctrine\dbal\src\Platforms\DB2Platform.php:24 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\doctrine\dbal\src\Platforms\DB2Platform.php on line 24