Hi, we had this crash on our server:
[January 30, 2020 12:21 AM] Error while running event Mining_Drones::on_script_path_request_finished (ID 112)
[January 30, 2020 12:21 AM] Mining_Drones/script/mining_depot.lua:411: attempt to index local 'entity' (a nil value)
[January 30, 2020 12:21 AM] stack traceback:
[January 30, 2020 12:21 AM] Mining_Drones/script/mining_depot.lua:411: in function 'unique_index'
[January 30, 2020 12:21 AM] Mining_Drones/script/mining_depot.lua:731: in function 'add_mining_target'
[January 30, 2020 12:21 AM] Mining_Drones/script/mining_depot.lua:678: in function 'handle_path_request_finished'
[January 30, 2020 12:21 AM] Mining_Drones/script/mining_depot.lua:839: in function 'handler'
[January 30, 2020 12:21 AM] core/lualib/event_handler.lua:44: in function <core/lualib/event_handler.lua:42>"
