model checker "uv set 0" issue

[spiderfriend]

i've been screwing around with ripping models from a particular game for a while and thought i'd contribute to the models resource page for it- however upon using the model checker tool i'm getting a whole lot of this.



i'm sure plenty of people have had this issue before but i can't for the life of me find an answer on what this means. anyone who can help? for the record i'm using blender