The redirect URI in the request, https://gouminapp.com/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/148005808686-q7fb2e0csnp8e2dge6b6147dg66cqd4l.apps.googleusercontent.com?project=148005808686