The redirect URI in the request, https://fleurtearestaurant.com/registration/, 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/563608738622-k3t7e44rf4cokkltklf7qg02khrhv8vn.apps.googleusercontent.com?project=563608738622