Fatal error: Uncaught Error: Interface "Composer\Plugin\PluginInterface" not found in C:\01_Projekte\liga_24\phpseclib\vendor\composer\package-versions-deprecated\src\PackageVersions\Installer.php:34 Stack trace: #0 {main} thrown in C:\01_Projekte\liga_24\phpseclib\vendor\composer\package-versions-deprecated\src\PackageVersions\Installer.php on line 34