Problem with nn_quantizer.py

hello, i have a problem when i try to run nn_quantizer.py follow this article : AI and Machine Learning | Quantize the model – Arm Developer
the error message is
‘RuntimeError: Could not open file repos/openmv/ml/cmsisnn/models/smile/smile_iter_*.caffemodel’
i don’t know what wrong and i have done all step before this.
thank you very much.

smile_iter_*.caffemodel is the trained model, you need to train the model first.