Grader Error: Grader feedback not found — Programming Assignment: Retail sales - Expanding your analysis — Module 2

When I try to submit the assignment “Programming Assignment: Retail sales - Expanding your analysis” in Module 2 of the Python for Data Analytics course, I get an error (see screenshot below):

Because of this, I don’t get the 10 points for ex10 (see the next screenshot):

Hi! Are you matching the expected output for that exercise? If so, can you try resubmitting it. Sometimes, that error is just a glitch. Also, please let me know if you deleted any code cell by any chance. Thanks.