ops-Gazelle/sections/error/404.php

<?php

namespace Gazelle;

?>
<h1>Error: 404</h1> Not Found.
<?php

//Hide alerts for missing images and static requests
if (!preg_match("/\.(ico|jpg|jpeg|gif|png)$/", $_SERVER['REQUEST_URI']) && substr($_SERVER['REQUEST_URI'], 0, 9) !== '/static/') {
    notify(IRC_CHAN_STATUS, '404');
}