Error - C3_W2_Collaborative_RecSys_Assignment

While the Cost Function is working as expected (image attached) - the grade is rejecting the output (image attached). Please help.
Grader

The grader has indicated a fault in your function cofi_cost_func , but you have posted the output of cofi_cost_func_v .

There is no such error. Either way, both will result in the same value.

Please remove your code.

Thanks for your guidance, was able to resolve this.