Error while running event belt-balancer-2::on_nth_tick(4)
LuaTransportLine API call when LuaTransportLine was invalid.
stack traceback:
[C]: in function 'len'
__belt-balancer-2/objects/balancer.lua:203: in function 'run' belt-balancer-2/helper/message-handler.lua:33: in function <belt-balancer-2/helper/message-handler.lua:31>
