Course 4 Week 1 Assignment 1 Grading Issue

So I have passed all the tests in all graded cells in assignment 1, however I received 75/100 with the following comment:

I am sure I passed all tests, and I reviewed and re-submitted the assignment but had the same problem. Here is a screenshot from the last graded cell output:

Please help :upside_down_face:

The same happens to me. I don’t understand from the grader output where is the problem

I figured it out. It was the way I casted the Z matrix to float in “conv_single_step” function. Apparently you are supposed to only cast the b vector and do not apply any transformation on the Z matrix.

Thanks, but I suppose my issue is different, because I already cast only the b vector to float

Same here. I only cast b to float and all other tests are passed. Not sure where’s the problem.