World init error on generating world from image

[Richard Park]

Plugin version: v8.0.0-PRE-RELASE-6

Spigot username: papperclip-b381

Issue: World init error on generating world from image

Link to settings file (world-settings.json, possibly also biome settings if you have created your own):

Link to error log/crash log: [Link Text]https://pastebin.com/jJRnRkRZ