Testing Seed 4637691647, cobblemon snapshot 85 due to a different bug in their newer snapshots.

Two savanah villages generate near spawn in this seed. The one at 0, 384 doesn't cause problems, but has no generation from either mod. The one at -224, 656 has a berry farm with only cobblemon, and a nearby but not part of the village purple ars tree with only ars. With both enabled approaching this village causes a crash.
crash-2023-09-10_16.26.13-server.txt

In most cases re-loading the world is impossible. In the event that you can re-load as the last time your position was saved is before getting too close to the village chunks stop loading a few seconds after the world loads.

(I have no idea whose end this is on, so I've posted it both here and on their discord)

Appears resolved by Cobblemon in their snapshot 99