Cannot submit Course 1 Week 1 Assignment

Popup saying “Submitting…” forever.
No graded assignments listed in the course page.
Tried in two different browsers.
January 7, 2022 at 10:00 US Eastern

Hi @joel_wachman, Welcome to our community!
Please let me know if this problem is resolved or not.

Thank you!

Hi, i submitted my solution to exercise 1 from week 1 but got the following error when i checked “my submission” page:

Cell #20. Can’t compile the student’s code. Error: TypeError("‘NoneType’ object is not iterable",)

PS: the code worked as expected in the LAB