Hi,
I came across this very cool tool on Github to develop oriented buffers:
The Wedge Maker for ArcGIS is an ArcGIS tool that allows the user to create wedge and arcband (a wedge with a part of the cone of the wedge erased) shapes.
While I am using the test example file for this tool, trying to create what they have created (you can see it open up in the following image), I constantly run into an error:

I'm currently using ArcGIS Pro 2.7.0. Don't know if it's a version issue.
Any idea about how to fix the problem? Any advice would be much appreciated.