Fatal error: Uncaught Error: Class 'Composer\Command\BaseCommand' not found in D:\workspaces\liZiPingBack\vendor\symfony\flex\src\Command\DumpEnvCommand.php:23 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\symfony\flex\src\Command\DumpEnvCommand.php on line 23