Error in week three practice lab exercise 3

Course Q&A Machine Learning Specialization Supervised ML: Regression and Classification
1

can someone explain me what the error is about
operands could not be broadcast together with shapes (100,) (2,)

2

Hello @sam_parmar

Welcome to the community.

There are multiple areas where the logic needs to be corrected. I will send you a DM

NOTE:-It is strictly against the community guidelines to publicly share your code/solution. So, I am going ahead and deleting it.