Failed to load mods: Error while loading item prototype "MOD-FROZEN-solid-fuel" (item): Must have a fuel_value when fuel_acceleration_multiplier, fuel_top_speed_multiplier, fuel_emissions_multiplier, or fuel_glow_color are used.
Modifications: Freezer
I get the above message when loading this mod with Spoil Down (https://mods.factorio.com/mod/spoil-down). I assume other mods that make fuels spoilable would also cause the same error.