C2W1_Assignment - Doesn't Save or Grade

When completing the assignment, my notebook neither saves my progress or grades it correctly.
When saving, I was receive an “autosave failed” message when attempting to save my progress.

When grading, I always receive a zero no matter the work completed.
I get the following error message in every section: There was a problem compiling the code from your notebook. Details:
‘NoneType’ object has no attribute ‘datasets’

I have read the past forum posts, and I am not using the partial grading functionality at all. I am not sure what is causing these issues.

Please click my name and message your notebook as an attachment.

For issues related to coursera lab environment (i.e. for being unable to save the notebook), contact coursera help.
Your notebook is incomplete. There’s a #grade-up-to-here tag you can use for grading partial work.