The mod Belt Balancer 2 (2.0.9) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event belt-balancer-2::on_tick (ID 0)
invalid key to 'next'
stack traceback:
[C]: in function 'next' belt-balancer-2/control.lua:215: in function <belt-balancer-2/control.lua:199>
