1.13.2 WorldInitEvent error (maybe a not included library)

[Cerexus]

Plugin version: 8.0.0 Nov 23, 2018

Spigot username: Cerexus

Issue: On startup the Plugin gives a Error. I also tried your 8.0.x versions

Link to settings file (world-settings.json, possibly also biome settings if you have created your own): no world-settings.json

Link to error log/crash log: https://pastebin.com/3u2bdh4H

[minelazz]

We working on it