Server Version

Pufferfish 1.20.4

Resource Version

v6.0.7

Dump Information

https://ci.craftationgaming.com/dump?id=hutodocisi

Describe The Problem

when you press PCM on the subject and a menyuk comes out, an error appears in the console, everything functions on the server.

Additional Context

No response

Checklist

• I am running latest version of this resource.
• I have read the wiki to make sure it's not an issue with configuration.
• I ticked all of these boxes without actually reading them.
• I have checked that my help request is unique and another request does not exist.
• I acknowledge this is not a bug report and is instead a help request.

Sorry for the late response, I can't recall if you asked this in the Discord server as well.

This is not a bug. To prevent this error you must prevent the consumption of the book via cancel-events itemflag.
To be clear this is not a bug, that error exists because it was specifically coded to happen by Mojang. If you get a knowledge book from creative mode the same issue will appear because they are null books (you don't learn anything from consuming them).

https://github.com/RockinChaos/ItemJoin/wiki/troubleshooting#-knowledge-book-issues

thanks!