title: Gem::LoadError: Specified 'sqlite3' for database adapter, but the gem is not loaded
body: <p>I'm trying to push my app to heroku but am getting this message.</p>
  
  <pre><code>Gem::LoadError: Specified 'sqlite3' for database adaptor, but the gem is not loaded.
  </code></pre>
  
  <p>But I did not. I don't have sqlite3 anywhere in my database.yml file</p>
  
  <pre><code>development:
    adapter: postgresql
    encoding: unicode
    database: blog_development
    pool: 5
    timeout: 5000
    host:  localhost
  
  test:
    adapter: postgresql
    database: blog_test
    pool: 5
    timeout: 5000
  
  production:
    adapter: postgresql
    database: blog_production
    pool: 5
    timeout: 5000
  </code></pre>
  
  <p>My adapter name is psotgresql. I even opened the file myself</p>
  
  <pre><code>cat database.yml
  </code></pre>
  
  <p>I searched through the file but could not find postgresql. Here is my gemfile</p>
  
  <pre><code>ruby '2.1.0'
  gem 'rails', '4.1.1'
  
  group :development, :test do
    gem 'pg', '0.17.1'
    gem 'rspec-rails', '3.0.1'
  end
  
  group :production do
    gem 'pg', '0.17.1'
    gem 'rails_12factor'
  end
  
  group :test do
    gem 'selenium-webdriver', '2.35.1'
    gem 'capybara', '2.1.0'
  end
  
  gem 'sass-rails', '~&gt; 4.0.2'
  gem 'uglifier', '&gt;= 1.3.0'
  gem 'coffee-rails', '~&gt; 4.0.0'
  gem 'sprockets-rails', '~&gt; 2.1.3'
  gem 'bootstrap-sass', '3.1.1.1'
  
  gem 'jquery-rails'
  gem 'turbolinks'
  gem 'jbuilder', '~&gt; 2.1.1'
  
  group :doc do
  
    gem 'sdoc', require: false
  end
  
  gem 'bcrypt', '~&gt; 3.1.7'
  </code></pre>
  
  <p>I have pg located in the production environment here. I have ran bundle install, bundle update, git add, git commit, and git push heroku master numerous times and I still get this message.</p>
  
  <p>I don't understand this. I did NOT specify sqlite3 for my database adaptor.</p>
  
  <p>I'm at a loss for words.</p>