Error while running event Transport_Drones::on_tick (ID 0)
Given entity doesn't exist anymore.
stack traceback:
[C]: in function 'set_command'
Transport_Drones/script/transport_drone.lua:667: in function 'go_to_depot'
Transport_Drones/script/transport_drone.lua:166: in function 'pickup_from_supply'
Transport_Drones/script/depots/request_depot.lua:498: in function 'dispatch_drone'
Transport_Drones/script/depots/request_depot.lua:256: in function 'make_request'
Transport_Drones/script/depots/request_depot.lua:283: in function 'update'
Transport_Drones/script/depot_common.lua:359: in function 'update_depots'
Transport_Drones/script/depot_common.lua:367: in function 'handler'
core/lualib/event_handler.lua:47: in function <core/lualib/event_handler.lua:45>