Gradient checking assignment

I’m not able to solve the last test in the gradient checking assignment .I’ve been at this for days and i’ve gone past the due date . Could really use some help with this part .

Can I know at which grader cell are you stuck??

If you have any error, take a screenshot of the error and share here. Don’t post codes here.

You can send your notebook via personal DM.

Regards
DP

The issue was really not an error but a confusion between expected output and the outcome of the grader cell, which was correctly done by post creator.

Issue is resolved.