I am trying to use this script, GN_QuadFillHole, the instructions say to place the script C:\Users\<username>\Documents\maya\<version>\scripts, then reboot Maya and run the following:
That is a python error, and you should just be able to google that error directly to find more information.
Unfortunately, it doesn’t LOOK like a python traceback because Maya defaults this “Show Stack Trace” option to unchecked. Please go in and make sure that checkbox is checked. It saves SO many headaches in the future.
You will have to find mayapy and open a command prompt in that folder. Then install the package named six. The command will probably look like: mayapy -m pip install six
Restart maya, and that error should be fixed.