I believe Nate has retired his old python app in favor of his newer node-based app — Lutron changes the authentication out from under the older app and it’s just not going to work now. Nate’s got a long thread elsewhere on his newer app… but additionally, I’ve forked Nate’s Code into a version that handles multiple lutron bridges, among other improvements. You can look into that here LutronPro Caseta v1.0 and you can scroll up that thread to look into Nate’s version as well.