While playing a SE + krastorio 2 with some other mods, we got this crash while scanning chunks with a radar.
The mod The Ruins Mod (1.1.5) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event AbandonedRuins::on_tick (ID 0)
The mod RPG Items (0.20.2) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event m-rpg_items::on_entity_damaged (ID 100)
m-rpg_items/control.lua:679: attempt to index local 'force_data' (a nil value)
stack traceback:
m-rpg_items/control.lua:679: in function <m-rpg_items/control.lua:672>
stack traceback:
[C]: in function 'damage'
AbandonedRuins/utilities.lua:71: in function 'safe_damage'
AbandonedRuins/spawning.lua:57: in function 'spawn_entity'
AbandonedRuins/spawning.lua:94: in function 'spawn_entities'
AbandonedRuins/spawning.lua:172: in function 'spawn_ruin'
AbandonedRuins/spawning.lua:184: in function 'spawn_random_ruin'
AbandonedRuins/control.lua:58: in function <AbandonedRuins/control.lua:53>

I'll fix it in ~17 hours

New version has been uploaded: https://mods.factorio.com/mod/m-rpg_items/downloads

Appears to be working, will let you know if anything goes wrong. Thanks for the quick fix!