W2_A1_Tests failing on 1 cell(s)

I am getting this report from the submission:

[ValidateApp | INFO] Validating '/home/jovyan/work/submitted/courseraLearner/W2A1/Python_Basics_with_Numpy.ipynb'
[ValidateApp | INFO] Executing notebook with kernel: python3
Tests failed on 1 cell(s)! These tests could be hidden. Please check your submission.

But I am not seeing what exact cell has a problem. When I validate the notebook it passes. How do I debug this?

Look at the report from the grader, it should provide specific feedback for each part of the assignment.

Hello Ahneyderman,

Were you able to resolve the issue as suggested by Tom sir? Please let us know.