world/Error() can runtime if a runtime occurs before config loads

Created by: gbasood

runtime error: Cannot read null.error_cooldown
proc name: Error (/world/Error)
  source file: error_handler.dm,34
  usr: null
  src: world
  call stack:
world: Error(Cannot read null.mode (/exception))
Hidden Uplink. (/obj/item/device/uplink/hidden): New(the uplink (/obj/item/weapon/implant/uplink))
the uplink (/obj/item/weapon/implant/uplink): New(the implanter (/obj/item/weapon/implanter))
Uplink Implant (with injector) (/obj/item/weapon/storage/box/syndie_kit/imp_uplink): New(the floor (96,123,2) (/turf/unsimulated/floor))
runtime error: Cannot read null.error_cooldown