The mod Pollution Scaling (1.0.4) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event pollution-scaling.on_tick (ID O)
LuaChunkIterator API call when LuaChunkiterator was invalid.
stack traceback:
[C];: in function 'chunk iter'
-pollution-scaling/control.lua:31: in function 'check _chunk_batch'
-pollution-scaling/control.lua:67; in function pollution-scaling. /control.lua:66>

Sorry for the delay, I don't check this often enough apparently.
I don't think I have any way to reproduce this easily, but I added code that I'm fairly confident will handle this edge case in version 1.0.5 (just released).