Fatal error: Uncaught Error: Interface 'Symfony\Component\HttpFoundation\Session\SessionBagInterface' not found in /home/www/farandole/vendor/symfony/http-foundation/Symfony/Component/HttpFoundation/Session/Flash/FlashBagInterface.php:21
Stack trace:
#0 {main}
thrown in /home/www/farandole/vendor/symfony/http-foundation/Symfony/Component/HttpFoundation/Session/Flash/FlashBagInterface.php on line 21