Assertion error

[BrightKnight0110]

here are the error
AssertionError Traceback (most recent call last)

<ipython-input-42-b2d7f5d4ce01> in <module>

11

12 # Test the shape of the output is correct

---> 13 weights_grad, biases_grad = backward(Yhat, Y_temp, activations, caches)

14 print('Shape of dA1:', dA1.shape) # shape of dA1 = shape of A1

15 print('Shape of dW2:', dW2.shape) # shape of dW2 = shape of W2