EWG Not Recognising Default WG Worlds

[Zeuos Etherus]

SPIGOT USERNAME: Hadus

ISSUE: I've been having problems trying to import an existing world into EWG as a default world, and it seems like EWG just doesn't recognise anything from the settings.json file. Even if I put the world in the file, it just scans it and attempts to upgrade it to an EWG world - an proceeds to crash.

LINK TO SETTINGS FILE (settings.json): https://pastebin.com/5FLZhsC9

LINK TO ERROR LOG/CRASH LOG: https://pastebin.com/SpyVxcYf