Completing 2/3 tests but the first one fails - cannot find issue

Hey! This is regarding the first exercise in the first practice lab for week 2, so collaborative filtering. I think my algorithm should be working properly, and I pass the two last tests. However, the first one just fails and I’m not sure what can be wrong.

I have seen from the hints that my regularisation should correct, so it should be the cost function that has some error. I’m not sure what can be wrong, is there someone I could send the code for a look? The info I had written about the code here.

removed since it contained some info about my code


Can you send me your code in a direct message?