error message when going to tending page while not logged in

[doppynl]

If you go to this url:

https://elewant.com/herd/tending

When you are not logged in, you get this error message:

Cannot autowire argument $user of "Elewant\Webapp\Application\Controllers\HerdController::herdTendingAction()": it references interface "Symfony\Component\Security\Core\User\UserInterface" but no such service exists. Did you create a class that implements this interface?

I think this should redirect you to a login page or something.