The redirect URI in the request, https://dpnk2016.dopracenakole.cz/en/social/complete/google-oauth2/, 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/802205339760-0ltn8afm15o47q6frqa69i77inmmu4em.apps.googleusercontent.com?project=802205339760