3.0.21 installed from source fails to parse /mods-config/files/authorize?

[Gleb Lisikh]

Installed 3.0.21 from source on Ubuntu18 (from scratch) and on CentOS7
(over previous working 3.0.20 instance), and in both cases got the
following when doing the "Initial Test"
radtest testing password 127.0.0.1 0 testing123
as per
https://wiki.freeradius.org/guide/Getting-Started

(0) pap: WARNING: No "known good" password found for the user.  Not setting
Auth-Type
(0) pap: WARNING: Authentication will fail unless a "known good" password
is available
(0)     [pap] = noop
(0)   } # authorize = ok
(0) ERROR: No Auth-Type found: rejecting the user via Post-Auth-Type =
Reject

radiusd -X seems to have launched OK.

What's wrong?

T^hank you!