Fatal error: Uncaught Error: Interface "Symfony\Component\HttpFoundation\Session\SessionInterface" not found in /srv/disk3/2724534/www/transdoetaskforce.org/concrete/vendor/symfony/http-foundation/Session/Session.php:32 Stack trace: #0 {main} thrown in /srv/disk3/2724534/www/transdoetaskforce.org/concrete/vendor/symfony/http-foundation/Session/Session.php on line 32