Fatal error: Uncaught Error: Class 'Symfony\Component\HttpFoundation\HeaderBag' not found in /home/clienti2020/public_html/novaballet.it/vendor/symfony/http-foundation/ResponseHeaderBag.php:19 Stack trace: #0 {main} thrown in /home/clienti2020/public_html/novaballet.it/vendor/symfony/http-foundation/ResponseHeaderBag.php on line 19