Hi there, I have the same error. "Error while loading entity prototype"bob-biter-spawner" (unit-spawner): "Key "pollution_absorption_absolute" not found in property tree at ROOT.unit-spawner.bob-biter-spawner
Modification: Bob's Enemies
https://ibb.co/qjZpxxs
What other mods are you using?
I changed some things and now it works. And I gotta be honest, I don't know what fixed it :P