Build 350 Plugin outputs error during startup for Paper 1.20.1 Build 62

[StevenGoh-YH]

Information

Environment information
Plugin + server version info: 2.4.21 Build 350 + Paper 1.20.1 Build 62

Minepacks: 2.4.21
Server: git-Paper-62 (MC: 1.20.1)
Java: 17.0.7

Online mode: no
BungeeCord: no

Server/crash log
https://gist.github.com/StevenGoh-YH/15f73aa7447c5e12d2cc7a40dcdadbd7

Plugin config (optional)
Nil

Details

Description
The mentioned logs came out during server startup. The plugin functions as expected. Just hope to share what I see when running on my little private server.

Steps to reproduce
Copy plugin JAR into plugins folder
Start server

Expected behavior
Nothing so far.

Other information (e.g. detailed explanation, related issues, suggestions how to fix, links for us to have context, screenshots, etc.)
Nothing so far. Just the output when the server starts. You may close the issue if it's a non issue. Just hoping to help.