1.20.1, NeoForge 47.1.106, the server crashed at the exact moment while a player was exiting.
crash-2024-08-17_18.21.05-server.txt

Sorry for not getting back soon, I really need to get my emails sorted out. I should have a fix soon

Should be fixed now. I say should because I was never able to produce that crash during early testing so I'm not sure if I'm missing something else. I do see the bug in code and have tested the new patch but again, I'm not sure if I'm missing something else like before. If it still crashes please let me know