Hi,

Error while running event Constructron::on_nth_tick(60)
LuaEntity API call when LuaEntity was invalid.
stack traceback:
[C]: in function 'index'
__Constructron/control.lua:722: in function 'get_closest_object'
Constructron/control.lua:1110: in function 'get_closest_service_station'
Constructron/control.lua:940: in function 'get_job'
Constructron/control.lua:998: in function <Constructron/control.lua:990>

Hi
As the original mod creator is MIA I have started a repository and continued development on this mod.

https://mods.factorio.com/mod/Constructron-Continued