Twitter gem error: unauthorized

problem.md

I can't follow/unfollow users with the Twitter gem because Twitter could not authenticate me.

I've written the Twitter app credentials in config/config.yml and I've loaded it in config/initializers/app_config.rb:

APP_CONFIG = YAML.load_file(Rails.root.join('config', 'config.yml'))

After I do Twitter.follow(username), I get a Twitter::Error::Unauthorized exception

Did I miss anything?

twitter.rb

# config/initializers/twitter.rb

Twitter.configure do |config|
  config.consumer_key = APP_CONFIG['twitter_consumer_key']
  config.consumer_secret = APP_CONFIG['twitter_consumer_secret']
  config.oauth_token = APP_CONFIG['twitter_oauth_token']
  config.oauth_token_secret = APP_CONFIG['twitter_oauth_secret']
end