Fatal error: Uncaught Error: Class 'Composer\Installer\LibraryInstaller' not found in /www/shop/vendor/oxid-esales/oxideshop-composer-plugin/src/Installer/PackageInstallerTrigger.php:24 Stack trace: #0 {main} thrown in /www/shop/vendor/oxid-esales/oxideshop-composer-plugin/src/Installer/PackageInstallerTrigger.php on line 24