(PHP):Waarschuwing:include_once, kan stream niet openen:toestemming geweigerd

Vervang dit:

include_once 'inc/php/config.php';
include_once 'inc/php/functions.php';

met

include_once dirname(__FILE__) . '/inc/php/config.php';
include_once dirname(__FILE__) . '/inc/php/functions.php';