ERROR: No matching distribution found for cfg

I'm sorry, but without more context or information about what you were trying to do, it is difficult for me to provide a specific solution to this error message. However, here are some general troubleshooting steps you can try:

1. Double-check that you have correctly spelled the package name. It's possible that you misspelled it or used the wrong capitalization.

2. Verify that the package is available on PyPI (Python Package Index). You can do this by searching for the package on the PyPI website or by using the `pip search` command in your terminal.

3. Ensure that you have the latest version of pip installed. You can upgrade pip by running `pip install --upgrade pip` in your terminal.

4. Check that you have the correct version of Python installed that is compatible with the package you are trying to install.

5. If none of the above steps work, try installing the package from a different source or repository.

If you provide more details about your specific situation, I may be able to give you a more targeted solution.