Error Darkrp

[ERROR] addons/cardealer/lua/shop/gui.lua:403: attempt to call method ‘getDarkRPVar’ (a nil value)

  1. func - addons/cardealer/lua/shop/gui.lua:403
  2. unknown - lua/includes/modules/net.lua:32

local mon = formatNumber(LocalPlayer():getDarkRPVar(“money”) or 0) - line 403

Hopefully posted in correct spot if not im sorry thought this was best