[1.20.1, crash] Crash when opening inventory in creative

[Darkmega18]

Minecraft 1.20.1
Forge: 1.20.1-47.1.3
majrusz-library-forge-1.20.1-7.0.0
majruszs-accessories-forge-1.20.1-1.3.4
majruszs-difficulty-forge-1.20.1-1.9.1
majruszs-enchantments-forge-1.20.1-1.10.4

In a rather very large modpack.

I updated the mods that I could today, but when I got into the world and tried to check JEI in creative and do some work on the modpack the game attempts to crash on the client side.

crash-2023-12-05_02.42.31-client.txt

This is the crash report I keep getting whenever I try.
This issue also seems to have the side effect of freezing the loading of EMI.

[Darkmega18]

I have reduced the modpack to a bare bundle of essentials. and the issue still persists. I don't think this is a compatibility issue. unless this is a case where I've immediately found it on my first pick of mods I put in.

when in creative it probably still acts the same and crashes immediately. However in survival I can view JEI, after a large burst of lag, this lets me see that the bandage has a broken tooltip due to some issue. When cheating in one such bandage as soon as I go to mouse over it in my inventory the game will crash with the following crash log.

crash-2023-12-05_23.34.22-client.txt

you can see the much reduced subset of mods in that crashlog...

[Majrusz]

Hello, sorry for the late response, there was a bug in 7.0.0 that made the configuration file sometimes be invalid. If you updated to 7.0.1 try to remove majruszsdifficulty.json and rerun the game

[Darkmega18]

I had reset the config on the server and deleted the one I had put in defaults to be sure. it was still occurring.

[Darkmega18]

ah. ok. there was a new config that was unlabeled like what you quoted. that seems to have done it. my bad.