[Question] Outfit Doesn't Load Properly

[Dynamatic Studios]

I'm running Pokemon Essentials v20.1 and I plan to add in outfits. I do everything I'm supposed to and only result in being successful with both front and back sprites. However, when it comes to the overworld sprite, it stays the same. It acts as if the file doesn't exsist in the folder when it does. I've formatted it properly and no success. I've searched the wiki, pokecommunity, reddit, youtube, every possible source to find a fix to this and no luck. I have 8 players so player can select which skin tone trainer they want and the file is name girlwalk1,boyrun1, and vice versa. I named them boyrun1_1 to register that as an outfit and it still doesn't show up. I've renamed it countless times and neither of them worked. I'm exhausted on all other possible things I can do for this, so I need help.

Plugins I have (In case they affect it): Animated Sprites, Easy Mouse System, Elite Battle DX, Following Pokemon EX, Gen 8 Pack, GEn 9 Pack, KFootprints EX, Luka's Scripting, Modular menu and title screen, Overworld SHadows EX, Ruby Library, SHowdownUtils, Speed Up 2.0, Sun Rays, v20.1 Hotfix