Roguelike Adventures and Dungeons crashing repeatedly, Open Terrain generator seems to be the problem

Open terrain generator is causing issues, https://mclo.gs/ndQWp0s.

The server refuses to start at all. Tried 5 times to no avail.

Line 14321, exception thrown.

file is either not found or access is denied

remove OTG, or at least update it, but i dont think Aternos usually allows users to modify modpacks.

it says "java.lang.RuntimeException: OTG has detected that you are loading an OTG world that has been used without OTG installed. OTG has fixed and saved the world data, you can now restart the game and enter the world."

it worked earlier today. This error has occurred more than once. Unless Aternos modified the modpack sometime between then for whatever reason I don't see why this is happening. Server wasn't downloaded or re-uploaded in anyway, and the only modification was OptiFine client-side.

there is 2, Biome Bundle and world.

I loaded a backup because the world ended up getting corrupted, and now it works again, at least for now anyway.