The mod Upcycler (1.1.2) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event upcycler::on_tick (ID 0)
upcycler/scripts/tick-handler.lua:87: attempt to index local 'struct' (a nil value)
stack traceback:
upcycler/scripts/tick-handler.lua:87: in function 'handle_observed_struct'
upcycler/scripts/tick-handler.lua:138: in function <upcycler/scripts/tick-handler.lua:123>
