The mod dangOreus (1.5.18) caused a non recoverable error.
...
error while running event dangOreus::on_chunck-generated (ID 12)
Resource ammount has to be larger than 0
...

I got this by putting my starting radius at 1 (0 does not work)
I think the rng up or down is putting the ore bellow 0

fixed, on line 222 replace
event.surface.create_entity{name=type, amount=amount, position={x, y}, enable_tree_removal=false, enable_cliff_removal=false}
with
event.surface.create_entity{name=type, amount=math.max(amount,1), position={x, y}, enable_tree_removal=false, enable_cliff_removal=false}

probably a better place to put the fix but this works

Fixed, thanks for the report.