Error while running event pyalternativeenergy::on_nth_tick(60)
LuaEntity API call when LuaEntity was invalid.
stack traceback:
[C]: in function 'index'
__pyalternativeenergy/control.lua:324: in function <pyalternativeenergy/control.lua:285>

its being looked into

wind structure also have bug when destroy
Error while running event pyalternativeenergy::on_ player mined_ entity
(ID 67)
__pyalternativeenergy - /control.lua:445: attempt to index local 'mill (a
nil value)
stack traceback:
__pyalternativeenergy _ /controllua:445: in function
< _ pyalternativeenergy /controllua:428>