Turn off error message in dedicated MP

[y0014984]

TurnOff on "Diesel Ground Power Unit" with error message in hosted MP, not in Singleplayer oder dedicated MP; Only if router is connected to generator, not if laptop is connected; Somehow related to turnOffWrapper, updateSelfPower, UpdatePower, getPowerOutput; Perhaps server-side error, which can only be seen in hosted MP (because host == server) which is related to devices, that will be turned off because the generator also turns off; reproduceable; error can be found in server-log