Yes thanks - I did find the emonhub log file using ssh but it does not compare.
The page shown in the screenshot (my original post) was great. Using one screen it was possible to edit emonhub.conf, restart it and immediately see the result - all very user friendly - as the original system design clearly intended.
I’m not suggesting that the replacement is better… all I’m saying is that the problem hasn’t been fixed yet and that the relevant people are already aware of it…
Ok, this issue has now been fixed. If you run emonPi update the emonhub log should start working again. Please let me know if it does. It may require a reboot for changes to take effect.