The redirect URI in the request, http://nordostfussball.de/google-auth/, 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/15713517704-oro9knu3ojsvr2msadp6ovgqescpgjtk.apps.googleusercontent.com?project=15713517704