So the latest Bob's Metals, Chemicals and Intermediates (bobplates) removed the Electrum alloy. This mod has a recipe for it and will crash if you try to load it. To fix, remove the recipe.

LOADER-FURNACES-REDUX

Prototypes/addons/bobs mods
Recipies.lua

Line 365 - REMOVED

        add_smelting_recipe(
            {result = "electrum-alloy", amount = 5},
            {category = "lf-mixing-smelting", order = "d", subgroup = "lf-mixing-smelting"},
            {{name = "silver-plate", amount = 3}, {name = "gold-plate", amount = 2}},
            17.5
        ),

Just remove that whole block and save. Should work fine, and hopefully this gets updated.