Aye, our server keeps crashing when trying to generate chunks that got the new caves. Tried it in singleplayer and it crashed the game as well. Dunno if it's a corrupted chunk or some mods overlapping or smth. Could you check it out and try to help us out please? Thanks. Also here's the latest.log

unknown structure 'dungeons_enhanced:deep_crypt' in chunk [25, 11], discarding
unknown structure 'nova_structures:illager_camp' in chunk

try removing these two mods

tried that, crashed the exact same way, server crashed the second I got near the primordial cave

dupe #84