Customize the fuel value and emissions multipliers of all types of fuel (food, nutrients, chemical, nuclear, etc) and add fuel values to liquids like oil.
Tweaks
Mod category: Tweaks
Small changes concerning balance, gameplay, or graphics.
This is from the Factorio 2.1.20 update changing fuel_category to fuel_categories.
You can fix this by opening the data-updates.lua file and making these changes:
line 37: change to if property ~= "fuel_categories" and not has_fuel_category(raw) then
line 66: change to set_raw_property({"item"}, name, "fuel_categories", value)
line 67: change to set_raw_property({"capsule"}, name, "fuel_categories", value)