npc multiplayer problem

me and my freind likes to play LAN and im always hosting and i think we have played gmod for about a year and a half but since the new update my freind have had problems with the npc,s when he try to spawn one it just tell him
is there something wrong with my gmod?
or is there a comand i have to type in?

Change the server settings so NPCs are not restricted to just the admin.

Maybe NPCs got restricted to a rank your friend isn’t.

i dont think so i dont have any admin mods or rank mods