runtime null

[nyudenkov]

runtime error: Cannot create objects of type null.
proc name: New (/obj/machinery/computer/New)
source file: computer.dm,22
usr: null
src: the area air control computer (/obj/machinery/computer/area_atmos)
src.loc: the floor (177,106,1) (/turf/simulated/floor/plasteel)
call stack:
the area air control computer (/obj/machinery/computer/area_atmos): New(the floor (177,106,1) (/turf/simulated/floor/plasteel), null)
the area air control computer (/obj/machinery/computer/area_atmos): New(the floor (177,106,1) (/turf/simulated/floor/plasteel))