Can't change homelink bridge config

HA - 2021.12.0

I’m trying to get the homelink bridge set up to make some scripts available and I get a ‘Unknown error occurred’ when I attempt to change the set of entities exposed. In the browser console I see a 500 error to the url /api/config/config_entries/options/flow/b5352076ab8d46df837bb904c42c2d89

I’ve attempted to find a corresponding logged error on the server side of things but haven’t found anything - perhaps I’m looking in the wrong place? I’m looking at /home/homeassistant/.homeassistant/home-assistant.log

Any advice?