HOW TO FIND HUGSLOG
Go to Game Options > Turn on Dev mode > Click leftmost new white button at the top > press new green "Share Logs" button > paste resulting git link here

Mod Order Guide V4
Credit-'Chevalier XLIV' for readable format, as opposed to previous wall-of-text eye bleeding
Core
Hugslib
Jecstools
Humanoid
!Prepare Carefully!
Either here, or bottom of the mod list, occasional weird issues.
Libraries
Core file packets, if something says it has no content, just code for other mods to build from, that's a library.
Terra Core goes here.
THEN
immediately after libraries
Giddy-up Core
Giddy-up Addons
Exp. Doors
Third Age
If running Combat Extended, it is theorized that it should go right above Third Age, patch to both goes right below both.
In theory Rimworld of Magic goes here.
AFTER ALL OF THAT
Map Generation
Anything that adds biomes, messes with how maps work, or changes how the world map generates. Grand Rivers and Archipelagos go here.
Factions
Anything that ONLY adds new factions, not new races or types of pawns. Faction Control goes here.
Traits
Rainbeau's made a few of these. If it just adds traits, or adds slots, it goes here.
Medical
Yes this includes those that add new bionic parts. No it does not include mods that ONLY add medical tiems. EPOE and Rah's and A Dog Said and Archotech are examples of medical mods.
Game Behaviour/Mechanics Mods
While You're Up/Hand Me That Brick go here, but ALSO mods like Steel Isn't Flammable, Fewer Inferno Cannons and Greenworld, anything that changes how pawns, items, buildings, or events behave. Emphasis on GAME behaviour.
Items
Clothing, hair, buildings, items; hats, weapons, Vegetable Garden, nuclear power plants, Rimfactory, Climate Control and Advanced Bridges.
Race/Animal Mods
!!RACES GO AT THE BOTTOM THIS IS NOT A DRILL!!
Includes Animal Collab, Arachnophobia, Werewolves, Vampires, and other mods that make massive changes to pawns just by being loaded.
Sometimes two mods will conflict, and might be fixed by putting one of them above the other when it otherwise wouldn't be. Try this if you have done everything else here and the error still occurs.