The redirect URI in the request, http://news.thinkbrain.com/users/auth/google_oauth2/callback, does not match the ones authorized for the OAuth client. To update the authorized redirect URIs, visit: https://console.developers.google.com/apis/credentials/oauthclient/925512979966-1d8d5em79han66ifs12ua54vimv27g6e.apps.googleusercontent.com?project=925512979966