I'm hosting an Enigmatica 6 server with a couple friends and also added in AE2. I've been encountering a bug where chunks don't save when they are unloaded. If I'm far from spawn doing something, chunks don't save my work unless I do /save-all before I leave.

Describe the bug

My latest.log says:
[Server thread/ERROR] [net.minecraft.world.ChunkManager/]: Failed to save chunk [x, y] java.util.concurrent.CompletionException: java.lang.NullPointerException ...
... caused by: java.lang.NullpointerException at appeng.hooks.TickHandler.onUnloadChunk(TickHandler.java:180) ~[appliedenergistics2:8.3.0-alpha.2] ...

To Reproduce

All I did was make an Enigmatica 6 server, install AE2 and Simple Voice Chat in both client and server, and play.

To reproduce the bug:

1. Fly far away from spawn or go to another dimension.
2. Make some noticeable changes to the world.
3. Leave the area so that the chunks unload.
4. Verify that the server console is being spammed on unloading chunks that need to be saved.
5. Go back to the changed chunks, all of your changes will be gone.

Expected behavior

I would expect chunks to save properly.

Additional context

latest.log: https://gist.github.com/GusNa/ab37b80f579d6f05adb5468e34fc3bd7
The issue seems to start on line 3002

Environment

forced crash report: https://gist.github.com/GusNa/8732bccb63f458d23361965756696b1e

Please use the search before reporting issues.

hey, do u found a solution for this error?

hey, do u found a solution for this error?

See #5069.