Fatal error: Uncaught Error: Class 'Symfony\Component\HttpFoundation\ParameterBag' not found in /home/bienalsurweb/public_html/convocatoria2019/vendor/symfony/http-foundation/FileBag.php:22 Stack trace: #0 {main} thrown in /home/bienalsurweb/public_html/convocatoria2019/vendor/symfony/http-foundation/FileBag.php on line 22