Terminal script error it says

[captnCrunch]

i was playing nuketown zombies and when i reached round 19 or 20 it took me out and gave me a notice that said "server script runtime exceeded maximum number of parent server script variables terminal script error maps/mp/zombies/_zm_spawner.gsc:1" i couldnt take screenshot my screenshot button wasnt working somehow but i dont know what this means if its plutonium or the server typa problem