Minecraft Version

1.21.x

Mod Loader Version

0.16.0

Mod Version

1.3.13

Describe the Issue

Whenever i tried joining the server i'd get a "Network Protocol Error", after some binary search it seemed like RpgDifficulty was causing the error

latest.log

Errors below Line 959 (Note: it's not REI, tested without it cause i thought it was a bit sus by the log and previous ones)
No errors in console, only client.

Do you use any other mods except the required ones?

Yes

So without RPGDifficulty, everything works fine?

yes, when i removed your mod it worked just fine

same problem here
edit: it kicks me sometimes with the same error and when i finally manage to join the server will freeze for some reason and i have to kill the console

still having issues in 1.21.1 Fabric 0.16.5.

How can I reproduce this bug?
The log you sent here is about a bundle item sync issue.

i guess the only way of reproducing this bug is using the same modpack i am.
Also, thats what i find weird because i was getting kicked with my inventory empty.