Compact and UPS-friendly 1x1 loaders. Works with train cargo wagons, circuits, filters, and modded belts from Bob's, Krastorio, FactorioExtended Plus, Space Exploration, and Ultimate Belts.
So I've been trying to troubleshoot this a little bit by disabling all of my mods except for the miniloader, and the re-enabling them one at a time. The error appears once I enable Bob's logistics.