FATAL: role “root” does not exist

Question

I have started to learn using heroku and i was trying to execute bundle exec rake db:create db:migrate command, i have encountered the following errors,

Answer 1

If u are studying rails tutorial and you want to run a local server,you should have gem 'sqlite3' in gemfile,but if u want to push it to heroku you must replace gem 'sqlite3' with gem 'pg'.Or when running local server you can have them both,but when you push to heroku detele it because it's not suported.