/** * Redirect all frontend requests to the React index.html * This bypasses Nginx/Apache 404s on Managed Hosting */ add_action('template_redirect', function() { // 1. Allow access to wp-admin and login pages if (is_admin() || $GLOBALS['pagenow'] === 'wp-login.php') { return; } // 2. Locate your React index.html (assumes it is in the root) $react_index = ABSPATH . 'index.html'; // 3. If the file exists, serve it and stop WordPress execution if (file_exists($react_index)) { readfile($react_index); exit; } });