TypeError: required field "posonlyargs" missing from arguments error running a Pytest Script on Python 3.8.1

I created a Simple Selenium Pytest automation script on Python 3.8.1. After running the script I see the below error:

Traceback (most recent call last):
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Error messages
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TypeError: required field "posonlyargs" missing from arguments

I googled and saw that this seems to be an issue with Python 3.8.1. Any suggestions on how to avoid this error? I could always go back to the previous Python version (3.8.0), but I'm keeping that as the last option.