AttributeError: What do I do? :(

You should start by reading

and maybe, to get you started much faster, join @ErikFrits course Learn Revit API - The Most Comprehensive Course for Beginners (I am not affiliated, we know each other, and I think its work is great)
or at list go through its free videos https://www.youtube.com/@ErikFrits

And do not really too much on chatGPT to code from scratch, you won’t make friends :slight_smile: on forum and won’t get the expected result if you don’t know a bit of the ins and outs of the Revit API or pyRevit