Game error!!

I won this gun called AK-47-S-Gilded Skull from ZM2. Apparently every time i enter the room with this gun the game just crashed. It says "error". I tried to enter the room with other guns and it works perfectly fine. Whenever I switched to the bag that has AK-47-S-Gilded Skull, the "error" message will just pop up. Can someone please take a look into this?!