The redirect URI in the request, https://www.elephone.hk/plugins/externalauthGoogle/logincallback, 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/933989661751-1g0hgimk37pnto749v87o72pibjhh4j6.apps.googleusercontent.com?project=933989661751