W2A1 Exercise3 Test failed

Hello, I’m having trouble with the first assignment of week 2.
I think I successfully constructed “ResNet50” function, (I obtained desired test accuracy > 0.7) but the comparator gives me “Test failed”.

It says

Test failed
Expected value
[‘Add’, (None, 15, 15, 256), 0]
does not match the input value:
[‘TFOpLambda’, (None, 15, 15, 256), 0]

Any idea to solve the problem?

The same issue is addressed in the following url (6 hours ago), and I solved the issue by following the instruction below.
Thank you for your consideration.