SNAPSHOT: LuCI will not launch r17571 and r17581 on WRT1900ACv1

Installing and Using OpenWrt
1
  1. Installed sysupgrade over previous daily snapshot
    https://downloads.openwrt.org/snapshots/targets/mvebu/cortexa9/openwrt-mvebu-cortexa9-linksys_wrt1900ac-v1-squashfs-sysupgrade.bin
  2. Installed LuCI
opkg update
opkg install luci
  1. Tried to access via HTTP.
  2. Tried to CURL OpenWrt from another client
curl -v http://{IP address}
curl -v https://{IP address}
  1. Tried rebooting after installing LuCI
  2. Reverted back previous partition. All good
2

Same issue, LuCI won't launch with
OpenWrt SNAPSHOT, r17581-2c9a07ed28

Reverted back to
OpenWrt SNAPSHOT, r17554-da5bb885e1

3

SNAPSHOT r17598 Luci seem to work at the moment,