Compact 1x1 loaders that use electricity. They are able to use separate filters on each belt lane, and can stack items on belts if stack inserters are available.
Failed to load mods: Error while running setup for recipe prototype "express-mdrn-loader" (recipe): Recipe is in 'crafting' category but has a non-item ingredient 'lubricant'. Mods to be disabled:
. loaders-modernized (0.8.10) Reset mod settings
I haven't been able to replicate this, but in all fairness I'm pretty deep into getting Bob's Logistics support added in (and have ores and plates installed). Should realease and update Soon(tm). Hopefully the issue you ran into will be gone.