500 Internal Sever Error when creating an assignment

[lvanveen]

Hi everyone,

When creating a new assignment for my GitHub Classroom, I get to the second screen (where you select a template, set the private/public status and the use of an IDE). When I click "continue", I get "500 internal server error. We're sorry, but something went wrong. Try going back to classroom dashboard." On my first attempt, I did get to the next screen. When I tried to add a path to the section where you can specify protected files, the error came up and ever since, it comes up when I try to access that third screen.
I tried emptying the browser cache, starting a new assignment under a different name and deleting and re-creating the template repository. No effect.
I suspect there is something wrong with the cached data on the server side, perhaps a wrong path for the protect files, and each time I try to enter that screen that makes it crash.
This is a problem as I have 300 students waiting for their assignment to be released. Please help!
Should it matter: I use Firefox 134.0 on Ubuntu 20.04LTS.