Error while running event Transport_Drones::on_player_mined_entity (ID 66)
LuaEntity API call when LuaEntity was invalid.
stack traceback:
[C]: in function 'newindex'
__Transport_Drones/script/depots/supply_depot.lua:134: in function 'on_removed'
Transport_Drones/script/depot_common.lua:298: in function 'remove_depot'
Transport_Drones/script/depot_common.lua:308: in function 'handler'
core/lualib/event_handler.lua:47: in function <core/lualib/event_handler.lua:45>

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:665: in function 'go_to_depot'
Transport_Drones/script/transport_drone.lua:164: in function 'pickup_from_supply'
Transport_Drones/script/depots/request_depot.lua:440: in function 'dispatch_drone'
Transport_Drones/script/depots/request_depot.lua:207: in function 'make_request'
Transport_Drones/script/depots/request_depot.lua:228: in function 'update'
Transport_Drones/script/depot_common.lua:396: in function 'update_depots'
Transport_Drones/script/depot_common.lua:404: in function 'handler'
core/lualib/event_handler.lua:47: in function <core/lualib/event_handler.lua:45>