Unidentified event error with MEG 4

Basic questions:

[X] I am actually using ketting, and not any other software (e.g. magma)
[X] I am using the latest Ketting version at the time of writing for the Minecraft version, that I am using
[X] I have provided full server logs and not a crash-report
[X] I have checked all items without reading.
[X] I have provided proper reproduction steps
[X] I have ticked all boxes

What Minecraft Version is your Server on?

1.20.1

Full Ketting Version

No response

Description of behavior

I use the latest keting version 1.20.1 and Model Engin 4.0.6, everything works quite normally until I interact near the Model creature's hitbox, I am immediately kicked off the server with error line: Internal exception: java.lang.NoClassDefFoundError: com/destroystokyo/paper/event/player/PlayerUseUnknownEntityEvent

Reproduction Steps

Steps to reproduce the behavior:
1. Use above Version with mod bogus with the version x.y.z 
2. Run the server
3. See the mixin error

Logs

Internal Exception: java.lang.NoClassDefFoundError: com/destroystokyo/paper/event/player/PlayerUseUnknownEntityEvent

Additional context