Error when loading my save game
Error while running event upgradeable-quality::on_nth_tick(6)
invalid key to 'next'
stack traceback:
[C]: in function 'next'
upgradeable-quality/control.lua:124: in function 'get_next_machine'
upgradeable-quality/control.lua:48: in function <upgradeable-quality/control.lua:32>
