Video keeps buffering--new issue on a long playing machine

[geiler_stjoelive_com]

Ok I pulled up my Unifi system and blocked it, testing what device it was–it’s my doorbell security camera.

Security Cameras, Surveillance Systems, and Hi-Def IP Systems | Nelly's Security

So the logs show:
SSDP: Error parsing device schema for http://192.168.1.24:49152/upnpdevicedesc.xml

From Google, it appears Plex has had this issue in the past:

Thousands of senseless SSDP error messages in log. Why?

I am getting a similar item but it’s hitting an IP that isn’t even in use. My IPs are all in the 192.168.254.0-254 range, nothing in the 192.168.0.# range. Level Error Message SSDP: Error parsing device schema for http://192.168.0.50:45555/wps_device.xml

I have no way to turn off discovery on that camera.