To reproduce: place a tank, place a combi next to it, remove the tank.
Error while running event temperature-combinator::on_tick (ID 0)
LuaEntity API call when LuaEntity was invalid.
stack traceback:
[C]: in function 'index'
__temperature-combinator/control.lua:23: in function 'is_allowed_container'
temperature-combinator/control.lua:62: in function <temperature-combinator/control.lua:57>
