I am realizing as I am submitting this question, that other people have the same concerns with Calculate Geometry not working in Pro version 2.7. See below for the error that I am receiving. I have never had issues before using this geoprocessing tool, and it's not like it's a complicated process. Can anybody help me figure out what my error is trying to say?
I still believe after seeing multiple concerns about version 2.7 with this tool, that there may be a bug.