[vRP] Proxy error - due to "local user_id = vRP.getUserId(_source)"

So im trying to convert a script from ESX to vRP, but I have got a lot of proxy error in my server console.
and that not due to ESX converting, becouse when i made a script from the buttom. The same error happend. so now I looking for someone to answar me on why it happens and how to fix it?