Error notice while looking at some monster

Error notice while looking at some monster

Hi all,

I was searching for some monsters art http://opengameart.org/art-search-advanced?keys=&&&field_art_tags_tid_op... and then was looking at an entry of some monster

http://opengameart.org/content/monsterboy-in-wonder-world-mockup-assets

While looking at it, I saw this notice at the top :-

Notice: Undefined index: und in eval() (line 2 of /var/www/sites/opengameart/sites/all/modules/ds/ds.module(954) : eval()'d code).

Dunno what it means but guess it's report it.