3213.045 Error MainLoop.cpp:1429: Exception at tick 19581: The mod Companion Drones 2.0 (2.0.1) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event companion-drones::on_pre_build (ID 9)
LuaItemStack API call when LuaItemStack was invalid for read.
stack traceback:
[C]: in function 'get_blueprint_entities'
companion-drones/script/companion.lua:1519: in function 'get_blueprint_area'
companion-drones/script/companion.lua:1557: in function 'handler'
core/lualib/event_handler.lua:47: in function <core/lualib/event_handler.lua:45>
