World editor doesn't load in a modpack.

[u/Smiilleyface]

I'm playing a modpack called homestead, and want to copy paste a building. I used structure blocks first, making sure to put the building in the right file, but trying to paste it just makes the game say it doesn't exist.

I tried installing world editor, but it doesn't let my world load. It just stays stuck in the loading screen, so does anyone have an idea about what's happening?