OpenWrt 19.07.2 service release

I upgraded my two x86 systems from 19.07.1 to 19.07.2. The first system on geode hw seems to work fine and upgrade did as usual. The seconde system on VM with x86_64 target lost its Luci as the system refuse to start uhttp process. Log lines:

Sat Mar  7 12:01:26 2020 daemon.info procd: Not starting instance uhttpd::instance1, command not set
Sat Mar  7 12:01:26 2020 daemon.err procd: unable to find /sbin/ujail: No such file or directory (-1)

I tried to find, what package provides /sbin/ujail, without much success. Found these from the forum.

But weren't much for help without me digging deep into the subject. Before I'll go deep into this, I'd like to ask those familiar, how to fix this? Or is this a regression bug slipped in preparation of the release, as one might think so as upgrade on geode went without a hitch.

As usual I upgrade with Image Builder from release target.