Issue
When working with Python, please note that the version of Python needs to match the version we support. In the Help Document below. Under the topic "What is the Python Action?," there is a link to Installing Python that says to install Python for Windows. It doesn't have to be version 3.7.2 as pictured in step 6, but it does need to be a 32 bit version.
https://help.nintex.com/en-US/rpa/Actions/Python.htm
Resolution
Please look through the help document above and make sure you are using the correct type of Python. This document contains a lot of useful information about this topic.
If you have further questions, please reach out to Nintex Support at support@nintex.com.