If you try using over 50 construction bots at once it will crash and give this error:
The mod Mining Drones (2.0.2) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event Mining_Drones::on_object_destroyed (ID 178)
Mining_Drones/script/mining_drone.lua:567: attempt to index global 'entity' (a nil value)
stack traceback:
Mining_Drones/script/mining_drone.lua:567: in function 'handler'
core/lualib/event_handler.lua:72: in function <core/lualib/event_handler.lua:70>
