Display error instead of 404 page when deletion of registration fails
It’s less likely to happen in practice, but when testing the registration feature, the delete-action for removing your registration may fail when the registration was changed (approved/rejected) by the conference organizers after loading the page.
Submitted by Elmer van Chastelet on 5 March 2021 at 14:12
Display meaningful message in this case instead of serving a 404 error page.