When using edit orders Zen Cart v1.5.4
I'm getting the following error, edit orders does not save properly so not sure is this something edit orders needs to address or is this an issue with the AdminRequestSanitizer.php file?

[18-Mar-2016 09:23:18 America/New_York] PHP Warning: htmlspecialchars() expects parameter 1 to be string, array given in /var/admin/includes/classes/AdminRequestSanitizer.php on line 319