gem "--no-ri" invalid option

[ssmutz]

On Ubuntu 22, when installing from apt:

ERROR:  While executing gem ... (Gem::OptionParser::InvalidOption)
    invalid option: --no-ri
Did you mean?  no-force
dpkg: error processing package concerto-full (--configure):
 installed concerto-full package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 concerto-full
needrestart is being skipped since dpkg has failed
E: Sub-process /usr/bin/dpkg returned an error code (1)

[JonnyFunFun]

Also occurs on 20.04. Right after database configuration.

ERROR: While executing gem ... (OptionParser::InvalidOption)
invalid option: --no-ri
Did you mean? no-force
dpkg: error processing package concerto-full (--configure):
installed concerto-full package post-installation script subprocess returned error exit status 1
Processing triggers for libgdk-pixbuf2.0-0:amd64 (2.40.0+dfsg-3ubuntu0.3) ...
Processing triggers for systemd (245.4-4ubuntu3.15) ...
Errors were encountered while processing:
concerto-full
E: Sub-process /usr/bin/dpkg returned an error code (1)