NLP Specialization: Course 1, week3 assignment submission error

I am trying to submit programming assignment from week 3 of course 1 “Natural Language Processing with Classification and Vector Spaces” , but getting following error for every question I have submitted for this assignment.

  • Grader Error: Grader feedback not found

Visit the Discussion forum to see if your peers are experiencing or have found resolutions for similar errors. If the error isn’t resolved in 24 hours, please reach out to Coursera through our Help Center.

Per technical support, I have submitted multiple times by going through following change but with same error:

  1. Update browser
  2. Change browser
  3. Use Incognito window
    I am using personal laptop without any virtual setup

One theory would be that you have inadvertently damaged some part of the notebook infrastructure or metadata that the grader depends on. A way to test that theory would be to follow this thread to get a clean copy of the notebook. Then very carefully “copy/paste” over your completed code only touching the “YOUR CODE HERE” sections.

Please give that method a try and let us know if it helps or not.

One way to do that kind of damage is to run the notebook on a platform other than the course website and then upload it back to the course website.

ok, All questions are responding with same error. I can imagine it may be the case for some problems, but same issue for all questions/problem looks odd, unless issue may with full notebook.

Can I just try with one answer first, and then resubmit all other questions later if that resolves the problem?

Have you looked at the “metadata” in the notebook and claim to understand all that it does? Please consider that there may be some sections of it that the grader uses which apply to the whole notebook.

Have you run the notebook on Colab and reimported it back? That will have this effect.

No, I did not do any import/export or moving out of Coursera environment to complete this assignment.

That’s good. It is still worth trying with a clean copy. You can start by just copying over the solution to one section and see if you get different behavior.

Thanks Paulinpaloalto , that works.

That’s good news! Thanks for confirming. So even if we can’t exactly say how the damage to the notebook was caused, at least we have a way to recover.