The redirect URI in the request, http://www.fireassays.com/connected_account.php, 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/537738059636-nc05bphitijag6k4mjh9c1fth3ppoob6.apps.googleusercontent.com?project=537738059636