404 error page

[Brain8torm]

Hi!
Could you tell me how to make a 404 error page through your router. For example, instead of the plain text "404" on an empty page, another page was loaded - at /404/ with the same or its template?

For example, I create this page with path /404/:

Macaw::get('/404/', '\Controllers@error404Page');

In Controllers.php I add a function:

public function error404Page()
{
	header($_SERVER['SERVER_PROTOCOL'] . " 404 Not Found");
	$this->layout = Template::getInstance('error404.tpl');
	$this->layout->set("title", "404 Error - Not found");
	$this->layout->set("content", '404 Error: Oops! Nothing found');

	echo $this->layout->output();
}

In this case, we open the page /404/, but it gives the code 200, since the router is specified.

Thanks!