Hi, I've got this non-recoverable error:

Error while running event Transport_Drones::on_ai_command_completed (ID 120)
attempt to index a nil value
stack traceback:
[C]: in function 'draw_sprite'
Transport_Drones/script/transport_drone.lua:430: in function 'update_sticker'
Transport_Drones/script/transport_drone.lua:319: in function 'process_pickup'
Transport_Drones/script/transport_drone.lua:587: in function 'update'
Transport_Drones/script/transport_drone.lua:705: in function 'handler'
core/lualib/event_handler.lua:47: in function <core/lualib/event_handler.lua:45>

Is anyone able to help with this?
Thank you!

I get similar error after updating to experimental factorio (latest).

The mod Transport Drones (1.0.14) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Transport_Drones::on_tick (ID 0)
attempt to index a nil value
stack traceback:
[C]: in function 'draw_sprite'
Transport_Drones/script/transport_drone.lua:463: in function 'update_sticker'
Transport_Drones/script/transport_drone.lua:183: in function 'deliver_fuel'
Transport_Drones/script/depots/fuel_depot.lua:175: in function 'handle_fuel_request'
Transport_Drones/script/depots/request_depot.lua:155: in function 'check_fuel_amount'
Transport_Drones/script/depots/request_depot.lua:279: 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>

.80 version fixed this for me.