Fatal error: Uncaught Error: Class "Composer\Installers\BaseInstaller" not found in /home/backend/public_html/shoot/api/system/vendor/composer/installers/src/Composer/Installers/ShopwareInstaller.php:9 Stack trace: #0 {main} thrown in /home/backend/public_html/shoot/api/system/vendor/composer/installers/src/Composer/Installers/ShopwareInstaller.php on line 9