Looks to be missing a board outline.
Not sure what software you are using, but on Kicad it's the edge cuts layer. (it's going to basically specify your finished board size)
Scratch that, I see that in the gm4 file I think, you may need to rename it, on some sites. Usually most will let you know what is missing - file wise, they will also contact you with questions if there is something they are not sure of.