Following the update to Cobblemon 1.7, my updated NeoForge 1.21.1 modpack wouldn't launch. So after a lot of trial and error, I snuffed out the issue (Cobblemon Fight or Flight) and Minecraft launched. I wasn't out of the woods though, since when I went to create a Single Player world, Minecraft crashed. I've tried everything in my power and every fix I've come across and nothing works. I thought Connecter was the issue at point but its not, since I disabled it and all Fabric mods but that didn't change anything. I also disabled any Cobblemon addons but that didn't help either.
This is the crash log with all of the mods enabled: https://mclo.gs/OtOVyse

And this is the latest log: https://mclo.gs/NeYzS5I

One or more Create adddons are not compatible with the latest Create build

I disabled all of the Create addons but the crash persists
Crash Log: https://mclo.gs/FxHsRgu
Latest Log: https://mclo.gs/Q1EyAVL

Remove AllTheMons x Mega Showdown (atmxmsd)

I can't find atmxmsd in the content list. I deleted AllTheMons Modifcations and disabled Mega Showdown just now, but whenever I remove Mega Showdown, my game is stuck loading https://imgur.com/a/LvHTNFJ . I've had this issue from the start with Mega Showdown

Add the new latest.log

https://mclo.gs/mdnUDot

Maybe an issue with alltheleaks or the resourcepacks

Remove all Resourcepacks first

It crashed
Crash: https://mclo.gs/V2nncCY

Latest: https://mclo.gs/ZRMVZpF

I'm remaking the modpack to see if its an issue with the config or something

The error still points to atmxmsd

Maybe use a pre-configured modpack as working base and add new mods one by one or in groups

Actually, I just remade the modpack from scratch and it's fixed. I think something was corrupted and that was causing the issues. Thank you so much for helping me, it was an honor to work alongside a legend like you!!