Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Loader\FileLoader' not found in /home/app/htdocs/lidia/vendor/symfony/dependency-injection/Loader/FileLoader.php:27 Stack trace: #0 {main} thrown in /home/app/htdocs/lidia/vendor/symfony/dependency-injection/Loader/FileLoader.php on line 27