The redirect URI in the request, https://www.stronaslubna.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/1017496031153-0s6fsd07trltq1bldhij045unhjast3a.apps.googleusercontent.com?project=1017496031153