Fatal error: Uncaught Error: Class "Symfony\Component\Config\Loader\FileLoader" not found in C:\xampp\htdocs\dfs_lead_generator_old\vendor\symfony\routing\Loader\XmlFileLoader.php:30 Stack trace: #0 {main} thrown in C:\xampp\htdocs\dfs_lead_generator_old\vendor\symfony\routing\Loader\XmlFileLoader.php on line 30