Fatal error: Uncaught Error: Class 'Composer\Installer\LibraryInstaller' not found in /home/eberhardschwarze/public_html/vendor/contao-components/installer/src/Composer/LibraryInstaller.php:16 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/contao-components/installer/src/Composer/LibraryInstaller.php on line 16