Deploying Ror App Fails Because Of Sqlite3 (tried Other Posts Already)

I haven't been able to push my Ruby on Rails app to Heroku because it keeps trying to install sqlite3, and Heroku only uses Postgresql. I've followed the instructions of these post

Solution 1:

I figured it out. I was working off a different branch than the master, but pushing the master. Once I changed that it worked. Thanks everyone for helping!

Solution 2:

try this, use sqlite3 in ur development and test, but pg on production

group :development, :testdo
    gem 'sqlite3'end

group :productiondo
        gem 'thin'
    gem 'pg'end