Grader not working for Face Recognition Assignment

My assignment passes all of the tests in the assignment and I’m pretty sure this is the correct code. The grader says its not able to compile the code. It gives me this warning. Can someone help me?

I’ve also tried reloading the workspace and whatever. I can send the code to a mentor for them to double check if the code is correct

It says you have a syntax error in the UNQ_C3 cell.

I would like to see the full text of the grader’s error message, not just the fragment visible in the image.