When i created a droplet ubuntu 16 rails one click with rails 5 "PG::ConnectionBad fe_sendauth: no password supplied" , new york or san francisco options or anywhere.

If a tried to do "rails db:migrate" show me this error ..i tried to create another super user and change the credentials from database.yaml but continues with the same error

in some posts the people say that is an error when the doplet is created

How i can resolved? please this si the second droplet that i created

p.d : sorry for my english , i speack spanish