The redirect URI in the request, https://8tabi.style/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/304509089784-3nh7v4uf5fb1kc5gvq5sm30ej2gaig4t.apps.googleusercontent.com?project=304509089784