When I try to predict with my model I get an Attribute error
In cell 10 of your notebook you write:

model = build_model() #Perfect


In cell 11 you write:

model = model.summary() #Uh oh!!


later you call

example_result = model.predict(example_batch) #model.summary() returns None


and python tells you


  AttributeError: 'NoneType' object has no attribute 'predict'


This is because you reassigned model in cell 11 to, well, nothing. You should remove the model = in cell 11 and your code will run perfectly!

redo cell 11 to read:

 model.summary()