Trouble with NPC's

All of my Zombie npc’s and the antilion don’t do damage to human players. They can kill other Npc’s but not humans. please i need help cause i can play zombie game modes on LAN anymore because they don’t do damage to players.

sbox_godmode 0
sbox_plpldamage 0

Nothing changed still wont damage me

sbox_plpldamage 1

If sbox_plpldamage 1 it means that PvP damage is on. This has nothing to do with NPC’s. OP did you type that in console or in the chat?

I’m telling you all right now that it never used to do this. this is a fresh install of gmod and my comp was recently reformatted and i tried bot 0 and 1 of sbox_plpdamage. i only turn god mode on when im with my friends so i would see no reason for it to be on.