Request failed. This field must be unique

Summary

No submit possible, even full points without comment.

Error message: Request failed. This field must be unique.

Steps to reproduce

Not longer possible, fixed by relogin

https://grady.informatik.uni-goettingen.de/cs-2/sose20, participant "Protozoan Untamed", task "[a04-2] Formale Sprachen, Grammatik I"

Example Project

https://grady.informatik.uni-goettingen.de/cs-2/sose20

What is the current bug behavior?

No submit possible

What is the expected correct behavior?

Submit as usual

Relevant logs and/or screenshots

Possible fixes

fixed by relogin