Fatal error: Uncaught Error: Class 'Symfony\Component\HttpFoundation\Session\Storage\Handler\AbstractSessionHandler' not found in /home/app/htdocs/ninja/vendor/symfony/http-foundation/Session/Storage/Handler/NullSessionHandler.php:19
Stack trace:
#0 {main}
thrown in /home/app/htdocs/ninja/vendor/symfony/http-foundation/Session/Storage/Handler/NullSessionHandler.php on line 19