Work perfectly!

hidden pages goes to login 😉
You can also get the function inside the plugin and use it your functions.php theme:

function private_content_redirect_to_login() {
global $wp_query,$wpdb;
if (is_404()) {
$private = $wpdb->get_row($wp_query->request);
$location = wp_login_url($_SERVER[“REQUEST_URI”]);
if( ‘private’ == $private->post_status ) {
wp_safe_redirect($location);
exit;
}
}
}
add_action(‘template_redirect’, ‘private_content_redirect_to_login’, 9);