maybe we can try to load Parsedown, after all we can silence the error

inc/functions.php

@@ -20,7 +20,7 @@ require_once 'inc/events.php';
 require_once 'inc/api.php';
 require_once 'inc/mod/auth.php';
 require_once 'inc/polyfill.php';
-//require_once 'inc/lib/parsedown/Parsedown.php'; // we don't need that right now, do we?
+@include_once 'inc/lib/parsedown/Parsedown.php'; // fail silently, this isn't a critical piece of code
 
 if (!extension_loaded('gettext')) {
 	require_once 'inc/lib/gettext/gettext.inc';