BUG 1.17.1 PLUGINS

Describe the bug
When I install this plugin on my server running version 1.17.1, it does not work correctly.
No matter which plugin version I use, the bug is still present.
I don’t understand why this is happening.

To Reproduce
Steps to reproduce the behavior:

Set up a server running version 1.17.1

Add the plugin to the /plugins folder

Start the server

The plugin does not work properly / causes errors

Expected behavior
The plugin should work normally on a 1.17.1 server without any errors or issues.

Screenshots
No screenshots available at the moment.

System (please complete the following information):

OS: Windows

Server software: Spigot / Paper

Server Version: 1.17.1

Plugin Version: All tested versions

Additional context
I have tried multiple versions of the plugin, but the issue always occurs on 1.17.1.
If needed, I can provide console logs and error messages.