Critters not moving

hey, in my game , i have this problem too. And this animals have one NULL status. And i don't know how repeat this trouble ._.

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Yea I'm getting the same, worst is that if I'm not careful they'll DIE from starvation! Happened a few times with the with the Grubgrub, and I also noticed the empty NULL status. I had to wrangler them to reset their status.

나도 null값으로 표시후 크리쳐들이 움직이지 않음 빠른 해결 부탁합니다