[1.20.1] Graves plugin doesnt work

[PrograMysT]

Minecraft Version : 1.20.1

Mohist Version : 637

Operating System : Windows

Concerned mod / plugin : Graves Plugin
https://www.spigotmc.org/resources/graves.74208/

Logs : https://mcpaste.io/29b2429058905795

Steps to Reproduce :

1. Start the server
2. Plugin loads with no problems
3. Join the server
4. /kill [nick] (with items in inventory)
5. No grave is created (items just fall on the ground like normal)

Description of issue : So the plugin seems to be loading and it also creates the config files. But when you kill somebody no grave is created and nothing happens.