Greetings.
I know that CIT-Resewn is not yet released for 1.20.4. I'm eagerly awaiting the day that it is.
In the meantime, I was updating everything today and figured I'd give it a try, and at the very least give you a crash log to maybe help you guys figure out what to point your mixing spoons at, and also provide something the other tickets failed to do. Logs!

Environment:

• Operating System: Windows 10 (Latest updates as of February 15)
• Minecraft 1.20.4
• Fabric Loader 0.15.7
• Allocated RAM: 16 Gb

Mods List:

• ClothConfigAPI 13.0.121
• FabricAPI 0.96.4
• BetterEndSky 0.2.1
• CameraUils 1.0.9-Beta
• CITResewn 1.1.3
• CITResewn-JSON Lag Patch 1.1.3.2
• GammaUtils 1.7.19
• IKnowWhatImDoing 4.1.1
• LambDynamicLights 2.3.4
• MaLiLib 0.18.1
• Litematica 0.17.2-BETA
• MiniHUD 0.30.2
• ModMenu 9.0.0
• RainGlow 1.2.0
• Spark 1.10.60
• StatusEffectBars 1.0.4
• Stenhal 1.4.1
• WorldEdit 7.3.0
• WorldEdit-CUI 01

Logs:
latest.log

Thank you for the details, closing to not have duplicate issues.