Fatal error: Uncaught Error: Class "Composer\Installer\MetapackageInstaller" not found in D:\htdocs\SuiteCRM\vendor\symfony\flex\src\SymfonyPackInstaller.php:16 Stack trace: #0 {main} thrown in D:\htdocs\SuiteCRM\vendor\symfony\flex\src\SymfonyPackInstaller.php on line 16