Could this apply to you too?
still the issue persists
have you restarted the kernel?
yes
In your case, the grading failed because you have not completed the Exercise 5 translate function. The grader could not run that cell and generated error. In previous weeks there was a message (though not present in this week):
You can add the comment # grade-up-to-here in any graded cell to signal the grader that it must only evaluate up to that point. This is helpful if you want to check if you are on the right track even if you are not done with the whole assignment. Be sure to remember to delete the comment afterwards!
That could have helped you avoid this problem (at least in theory).
Cheers
thank you for help