Hi,

When I tried to run yours code, I get an error message this line =>
"result = np.round(model.predict_generator(valid_generator))"
error message is: ValueError: steps=None is only valid for a generator based on the keras.utils.Sequence class. Please specify steps or use the keras.utils.Sequence class.

How can solve this problem? I dont know, how can I choose true step size.(parameter of predict_generator) Please help.

Note: I can try this code:
result = np.round(model.predict_generator(valid_generator, steps=len(valid_generator)))
It's work but results are bad. All predictions are incorrect.