Please help me!!!

In my lab assignment of Week 2 - Exercise 5 - propagate, this error occurs:

Logistic_Regression_with_a_Neural_Network_mindset.ipynb (74.6 KB)

UnboundLocalError Traceback (most recent call last)

in

3 X = np.array([[1., -2., -1.], [3., 0.5, -3.2]])

4 Y = np.array([[1, 1, 0]])

----> 5 grads, cost = propagate(w, b, X, Y)

6

7 assert type(grads[“dw”]) == np.ndarray

in propagate(w, b, X, Y)

46

47 # YOUR CODE ENDS HERE

—> 48 cost = np.squeeze(np.array(cost))

49

50

UnboundLocalError: local variable ‘cost’ referenced before assignment.

I am not able to find bug. I am also attaching my jupyter lab notebook for better understanding.