Error when run migrations on Heroku, PostgreSQL with Rails 5

Question

I deploy Rails 5 with PostgreSQL to free app in Heroku. This is my configuration from database.yml:

production:
  adapter: postgresql
  username         


        

Answer 1

After delete old DB, you should execute this

heroku pg:promote HEROKU_POSTGRESQL_NEW_DATABASE

You can check your DB nickname by

heroku pg:info