Plus 1
I'm still really keen for a tiered data storage solution on unraid, ssds are so cheap and even if it was an option to add it to a pool for high utilisation files for speed of high demand/availability files would be ideal.
There was a change to the configuration for the docker they are now using /config instead of /frontend
you need to click the edit button as per the below:
And then rename /frontend to /config
It should work after that