Your using a secured https connection, right? How did you configured that?
Did you directly accessed it, by using IP or hostname, from your local LAN?
Did you tried accessing it from a different device?
ok - so I was able to dig into this more and I the supervisor couldnt talk to systemd-journal-gatewayd. I ended up uninstalling Avahi-daemon and redoing the install of the supervisor and issue solved
Yes, absolutely. The live logging feature doesnt actually stream from the log file, but rather leverages an OS native feature to stream from the journal function. For me, the journal gateway was not in state that the Supervisor could get the data. For me, the underlying issue seems to have been that both Avahi and resolvd were competiting mdns resolvers and for some reason I dont understand - that was a problem the journal gateway.