Hi @wjlgatech welcome to the forum!
That issue actually happens to me on my local machine when I have nbdev installed globally but running it within a virtual environment.
I’m not too familiar with Colab but, did you create a venv there? (e.g. by running python -m venv .venv)?
If so, try to uninstall nbdev from the global colab modules:
- If you’re in the venv,
deactivate. -
pip uninstall nbdev. - Activate the venv again
-
pip install nbdev.
Hopefully that helps.
In case you missed it, there are a few extra steps for Colab at nbdev in colab tutorial | nbdev_colab_helper
Also, sounds like others had issues too Using Nbdev with Google Colab - #21 by Mukei
Happy coding! 