Google Sign-In is not yet configured. Add your Google credentials to includes/config.php: define('GOOGLE_CLIENT_ID', 'your-client-id.apps.googleusercontent.com'); define('GOOGLE_CLIENT_SECRET', 'your-client-secret'); Get credentials at: Google Cloud Console
includes/config.php
define('GOOGLE_CLIENT_ID', 'your-client-id.apps.googleusercontent.com');
define('GOOGLE_CLIENT_SECRET', 'your-client-secret');