Crash in mystcraft world generation

[v1993]

I've been trying some random (linking page only) worlds with Mystcraft today and it crashed on the third try. Now it also crashes when I attempt to boot respective world, rendering save unplayable.

Original crash log: crash-2021-01-16_23.21.46-server.txt

Attempting to boot save crash log: crash-2021-01-16_23.26.02-server.txt

Both seem to happen in a roughly same call line, as a result of generation of star fissue.

[v1993]

If it's of any help, I can share world where this crash happens on loading.