The redirect URI in the request, http://masteruniversity.org/users/login/google, 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/194041559294-tli4qf06hql6des9orvb0jo7uc3kkpgf.apps.googleusercontent.com?project=194041559294