ModemManager is not in 19.07, but it is in master. It didn't make it in time to be included in the release. Should we remove luci-proto-modemmanager from the 19.07 LuCI branch? Is a backport of MM to 19.07 allowed?
Thanks that explains why I had to load Luci while I thought I had it compiled.
I am an experienced DDWRT user but learning OpenWRT, had your build running and liked it very much but the last one I tried I could not load Wireguard because of incompatible Kernel.
So I am trying to compile my own build which now runs with Wireguard, but I have to check if that has already some performance settings, the stock OpenWRT 18.06 was really horrible, up_threshold at 95 etc.
Anyway thanks for all your work and your excellent build