Minecraft Version

1.19.2

Fabric Version

Quilt 0.17.4

Mod Version

4.2.2

Details

The issue is not happening with 1.18.2 version of the mod (Prefab 3.1.5).

The issue is happened spesifically only on (to reproduce the issue) :

1. Iris (Tried on 1.2.8 and 1.3.1) with all its dependency.
2. Minecraft 1.19.2.
3. Prefab 4.2.2
4. Quilt 0.17.4

Latest Log
https://aofpaste.com/sifaqutuje.sql

I also have asked on Iris discord and I got some information :

@Brian-Wuest
Thank you very much not hurry, just take your time! :)

There are a lot of errors there and we don't support quilt.

Please provide the specific error in that log which is specific to Prefab as I could not see it right away.

It looks like It's is a shader mod. We don't support those mods with preview. This is similar to not supporting Optifine.