tf2onnx' has no attribute 'save_model'

This error message suggests that the 'save_model' function is not defined in the 'tf2onnx' module. This could be due to a version mismatch or a missing package.

To resolve this issue, you can try updating the 'tf2onnx' module to the latest version using the following command:

pip install --upgrade tf2onnx

If the issue persists, you can try importing the 'save_model' function from the 'tf2onnx.tools' module instead of the 'tf2onnx' module:

from tf2onnx.tools import save_model

Then, you can use the 'save_model' function to save the converted model in the ONNX format.