Luci not available anymore. SSH works

[jeff]

Are you running a router with 8 MB or less of flash?

See, for example,

Report Devices Here With 18.06.0 Provided Image too big to save overlay

Since the release notes of 18.06.0 ask to report on routers with images too big that the overlay is not saved, I'm reporting one of those routers: the ASUS RT-N10+ B1. As stated in this topic during RC1 https://forum.openwrt.org/t/solved-asus-rt-n10-b1-18-06-rc1-configuration-does-not-persist-after-reboot/16480 configurations are not preserved after reboot.