I really like the design of this blueprint. Unfortunately just like @WedHumpDay I was getting errors when trying to actually generate the automation (same errors in fact).
Not to step on the toes of @Sbyx but I went and basically forked it over to https://github.com/tykeal/homeassistant-blueprints
While I did that I did some formatting cleanup and then ran it through yamllint which highlighted some problems with the code. Applying fixes has given me a cleanly installing and working automation.
Direct install of this version is at: