Preparing to unpack .../libc-bin_2.27-3ubuntu1_amd64.deb ...
Unpacking libc-bin (2.27-3ubuntu1) over (2.26-0ubuntu2.1) ...
Setting up libc-bin (2.27-3ubuntu1) ...
Setting up redmine (3.3.1-4+deb9u1build0.17.10.1) ...
Determining localhost credentials from /etc/mysql/debian.cnf: succeeded.
Could not find gem 'brakeman' in any of the gem sources listed in your Gemfile.
dpkg: error processing package redmine (--configure):
 subprocess installed post-installation script returned error exit status 1