BEFORE CONTINUING:

• Always check you are using the latest version of these mods and its dependencies
• Remove known problematic rendering mods such as Optifine, Sodium and others

Version-Loader

1.20.1-FABRIC

Moonlight Lib Version

moonlight-1.20-2.14.6-fabric

Describe the Issue

When I try to stop the server on our old world which otherwise works perfectly fine the server crashes. When I do the same on a new world everything works.
If you want it and it helps than I could also upload the world folder. Although it is roughly 6,5GB so idk if that makes sense xD
If I can help in figuring this out please tell me!

Crashlog: https://mclo.gs/FjpJHlO

Background story:
We have played on this world for a long time and wanted to update all mods or rather I´ve been creating a huge update for ~1-2 years and now I thought it was ready so I tried to update the world from a backup and everything worked. I could join the server and everything was there but when I now try to stop the server it doesn´t want to stop properly :(

Log Attachment

latest.log

There is not crash report since it is a server :/

OPTIONAL: To Produce

1. Start the server with an old world
2. Stop the server
3. See it crash

OPTIONAL: Which mods are affected?

Idk to be honest. 469 mods are kinda hard to debug 😅

I updated every mod that I could without making the minecraft client crash. But on the server the same crash still happens when I stop it... here is the log: https://mclo.gs/0drD6Ry

I tried to join a singleplayer world with the current configuration and saving works although there is a different error it doesn´t crash the game, here is the log: https://mclo.gs/vm5joPb

Ima try too figure out the cause as soon as I have time again, but for now good night and if possible leave this issue open so I can report all my findings here
But at this point I should maybe just create my own bulletboard where I record all my findings until I can eventually report all bugs to the appropiate mods in such a way that they are easy to fix and the mod devs don´t need to sift through thousands of log lines😅

I tried v.2.14.1, v.2.14.5 and v.2.14.6 and nothing changed = same error
And also the old version that we used before which was 2.9.3 = crash because of dependencies requiring newer version of moonlight (atleast 2.13.65) which I also tried but then it crashes with a different error because something didn´t work with moonlight with a different error. Here is the log: https://mclo.gs/zG7zv0c
This time it also generated a crashlog which is here: https://mclo.gs/yFlvafg

Thx for the quick answer :D

Have you tried Moonlight lib v2.14.5

the difference between 2.14.5 and 2.14.6 is quite negligible. v2.14.6 has one code updated. just RegEx stuff.

make sure ALL mods are updated

Not sure what's going on