$ bundle exec rake redmine:plugins NAME=redmine_contacts RAILS_ENV=production
(in /var/www/html/redmine)
rake aborted!
LoadError: cannot load such file -- rails/all
/var/www/html/redmine/config/application.rb:3:in `require'
/var/www/html/redmine/config/application.rb:3:in `<top (required)>'
/var/www/html/redmine/Rakefile:5:in `require'
/var/www/html/redmine/Rakefile:5:in `<top (required)>'
(See full trace by running task with --trace)