STCubeAI/ error, no module named 'nn_st'

I’m trying to get the example code working on an Arduino Nicla Vision.
Example - Machine Learning - ST CubeAI -
I get a no module named ‘nn_st’ error.
Please tell me how to solve it.
Thank you

We don’t use that module or maintain it. That’s something ST added for their own demos. We use Edge Impulse. Please develop with their service.