• OTG Mod for Forge
• 1.12.2_v8_r6
• Forge: 14.23.5.2846

Here is a full crash log with the same error from a different occasion that also features my full mod list.
https://pastebin.com/JZAcDthq

What happens: I teleport to a Swamp biome, get a error in the server log, and no resources generate from there on out.

What I expected: I expected resources to spawn.

Error log: https://pastebin.com/22jjMKcg

EDIT: Turning off vine generation completely fixes this issue. The code in question: Vines(10,10.0,63,256)

Hey @mensreaMC , thanks for reporting this and looking into it. Have you tested with any other Vines() syntax, does it only fail in certain cases with certain parameters?

This needs to be tested and confirmed for v8.3 or higher.

Tped to a lot of swamps(spooky, large and swamp and swamp M) on 50+ worlds and havent happend for me once on 1.12.2_-_v8.3_r4

Thanks for testing @Ezoteric ! Closing this, feel free to reopen if the problem still occurs.