Guys,
HASS 0.84.6 was pushed out to work with the new Websockets used by Harmony. If you installed the 4.15.210 Harmony Beta, this was pushed out by Logitech to enable the old way we used to communicate.
I think you now have a “websocket” enabled HASS but a XMPP enabled Harmony, hence the errors.
So, either roll you install back to 0.84.3 in HASS OR roll your Harmony back to 4.15.206, so they either both use websockets or both use XMPP.
What I did was to download the 0.84.3 zip file https://github.com/home-assistant/home-assistant/archive/0.84.3.zip and copy the “harmony.py” file from 0.84.3 to my /home/homeassistant/.homeassistant/custom_components/remote/ directory (and restart HASS) so I’m still on 0.84.6 but running the harmony component from 0.84.3.
Hope that helps.
Simon