Chunk Wars is a team-based attack-defend minigame for Minecraft. You play in an arena of different Chunks, all carefully handcrafted to replicate different Minecraft biomes and structures as closely as possible. Along with your team you will face everything that vanilla Minecraft can throw at you. Your goal is to be the last team standing.
The End is building into the space occupied by Nether Fortress, Desert, and Pillager Outpost with air blocks overwriting those chunks in the arena.
This could be a coding issue(?) or a missing Structure Voids in the nbt file issue(?)
I will need to re-add Structure Voids, save new nbt and then test to confirm either way.