Tautulli - Monitor your Plex Media Server

It’s an internal IP… 192.168.1.167 – where PMS and Tatulli are installed (and working from 127.0.0.1). The server I’m trying to connect to is on the same subnet and is 192.168.1.187, and I can connect to it for other things. Do I need Python installed, or other parts of Tautulli, on the second PC?