The redirect URI in the request, http://www.jeppaspjall.is/posting.php?mode=login&login=external&oauth_service=google, 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/616687344290-h42ce2rdvsrosg2p7b78ppijuaf95462.apps.googleusercontent.com?project=616687344290