Environment

Minecraft version(1.16.5):
Build version: CatServer-1.16.5-301aa5f8-server.jar,
Mods/Plugins: skds_core-1.16.5-0.2.0.jar bpo-1.16.5-0.1.0.jar,

Describe the bug
https://pastebin.com/iC33tUyk

Expected behavior
No crash

To Reproduce
Install those 2 mods and run the server