The redirect URI in the request, https://snachetto.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/620028216227-okl7baunc5f511evkrfvnnu0r7dc07ik.apps.googleusercontent.com?project=620028216227