Hello !
I'm trying to deploy a rails 5 app with ubuntu 16.04 etc... On cap production deploy I get the following error on deploy:migrate

INFO [deploy:migrate] Run rake db:migrate
DEBUG [15816e11] Running if test ! -d /home/deploy/app/releases/20170313091718; then echo "Directory does not exist '/home/deploy/app/releases/20170313091718'" 1>&2; false; fi as deploy@138.68.83.124
DEBUG [15816e11] Command: if test ! -d /home/deploy/app/releases/20170313091718; then echo "Directory does not exist '/home/deploy/app/releases/20170313091718'" 1>&2; false; fi
DEBUG [15816e11] Finished in 0.306 seconds with exit status 0 (successful).
INFO [64a72276] Running ~/.rvm/bin/rvm default do bundle exec rake db:migrate as deploy@138.68.83.124
DEBUG [64a72276] Command: cd /home/deploy/app/releases/20170313091718 && ( export RAILSENV="production" ; ~/.rvm/bin/rvm default do bundle exec rake db:migrate )
DEBUG [64a72276] rake aborted!
DEBUG [64a72276] PG::ConnectionBad: could not connect to server: Connection refused
Is the server running on host "138.68.83.124" and accepting
TCP/IP connections on port 5432?
DEBUG [64a72276] /home/deploy/app/shared/bundle/ruby/2.4.0/gems/activerecord-5.0.2/lib/activerecord/connectionadapters/postgresqladapter.rb:671:in `initialize'

Do you have any pointers? to make it work can't seem to find similar issue on deployment server

note i tried this it didn't work: https://www.digitalocean.co...

All input welcomed thanks!
Thanks