C1W2 Assignment error after Submission

hey i am getting an unexpected error after submission why because when i run the cells individually then all tests are correct and nothing is wrong in the cells but after grading why it is showing this message plz help me ASAP.

Screenshot was removed by mentor as it contained codee from grade function cell that grades your assignment. Posting codes is considered against Code of conduct, so kindly refrain from posting images of codes that grade your assignment, you can post screenshot of failed unittest results, or failed submission grader for mentors to have a pre-requisite review of your issue.

@Md_Shahbaz_Khan

the images clearly shows you have failed unittest test results for exercise 3 and yet you have submitted assignment for grading.

Remember some autograder submit report based on complete review of codes and not merely a section of assignment.

So I suggest you to go back, and re-check your codes especially where you have failed the unittest

Regards
Dr. Deepti