I got " Grader Error: Grader feedback not found" on nn_model even unittest show output “All tests passed” and my code all is run.
I already try some advice like resubmit (I resubmit many times), restart & run all code, but nothing different. I still got error message.
What the point of the problem is this? And how I resolve?
Most likely that means there is something structurally wrong with your notebook. We will need to look at your notebook. I will contact you by DM (Direct Message) about how to proceed with that.