Mod loader

Forge

Minecraft version

1.16.5

Patchouli version

1.16.4-53.3

Modloader version

Forge 36.2.35

Modpack info

https://www.curseforge.com/minecraft/modpacks/thehoodaloos-smp-season-2

The latest.log file

https://paste.gg/p/anonymous/b61e7da031774819a68e058357c38e54

Issue description

When in a multiplayer server with Patchouli, when a user opens a Patchouli book, anyone nearby the book gets kicked off with a NullPointerException as the error, there is no log on the server or client saying an issue even occurred. Some people are reporting that it straight up crashes their game entirely instead of them being kicked off.

The server latest.log and debug.log do not say that anything happened aside from the person leaving the server, and the people who got kicked don't see anything either.

We've tried removing Optifine, Performant, and some other mods that could be the cause of the problem in the modpack, but the issue still persists.

Steps to reproduce

1. On hoodaloo.com, which is the server the modpack runs on, use a Sanguine Scientiem or Abyss 2 Patchouli Book in front of a player, or have them use it on you. You can also run a server using the modpack yourself if you remove the client side mods.
2. Whoever is near the book when it is opened will get kicked from the server, with a NullPointerException, there will be no logs of an issue on the client or server

Other information

This is video evidence of the problem happening, on the side of the people who got kicked, all that happens is a NullPointerException is the cause of them being kicked.
https://www.youtube.com/watch?v=2b4IUmmioMs
This is a video it happening.
https://imgur.com/a/fZ5CLmU
This is a screenshot of what the people who were kicked see.