Is this a modpack or mod issue? mod (I think)
(if something is screwy using a certain mod, then send the bug to the mod dev first.)

PLEASE MENTION IF YOU ADDED ANY MODS.. ESPECIALLY SODIUM, IF YOU DON'T, IT MAKES US VERY GRUMPY
I use sodium, indium, Tweakaroo, MiniHUD, Litematica

Modpack Version
(any bugs using a non-up-to-date version will be asked to replicate with the most up-to-date release)

2.8.5

Describe the bug
A clear and concise description of what the bug is.

Simple, the moment you insert a enchanted book into an anvil with a Conjuring soul alloy tool, server crashes

To Reproduce
Steps to reproduce the behavior:

1. Go to anvil GUI
2. Insert soul alloy sword
3. Insert sharpness book

Expected behavior
Sword appears in final slot and enchants

Screenshots
No screenshots :(

Logs
no logs available, I play on NA-East official server

Additional context
N/A