Randomly crashs with FAWE - Cannot invoke "it.unimi.dsi.fastutil.longs.LongArrayList.getLong(int)" because "this.wrapped" is null

Server Implementation

Paper

Server Version

1.20.1

Describe the bug

Hello everyone :slight_smile:
So, I've been using FAWE for a few weeks, but unfortunately I had to switch back to WE because FAWE was causing random crashes on my server when I use commands or teleport :/

In the photo, these are the crashes since the beginning of the month, you can see that I did 18 tests before taking the time to write this to you, I am not posting here randomly, the other 15 crash reports, are always the same, randoms using FAWE commands or having moved/teleported/disconnected after using FAWE commands.

I just spent about 2h30 doing tests by eliminating plugins that could be in conflict, but the problem... my last test was done with only FAWE as a plugin... So it's complicated to say that it's anything other than FAWE causing this.

Attached is the log + the crash report and a video.
https://pastebin.com/EB6SmBMC
https://youtu.be/JpNBpGXDbFg

Following this, I redid the test with ONLY WE, I did this for about 5 minutes (as in the video) and nothing... no crashes.

So I don't really know where to turn to find a solution, because I really like FAWE, especially since I have big changes in game to do, but using FAWE and crashing the server when there are 30- 40 players online, I don't like :/

If someone had a beginning of solution!

Thanking you!
-z-

To Reproduce

https://www.youtube.com/watch?v=i7C7wfypLUA

Expected behaviour

Read Describe the bug.

Screenshots / Videos

No response

Error log (if applicable)

No response

Fawe Debugpaste

https://athion.net/ISPaster/paste/view/d3463d18f3c4454ca13e00dde65fd184

Fawe Version

2.7.1-SNAPSHOT-548;fe33be5

Checklist

• I have included a Fawe debugpaste.
• I am using the newest build from https://ci.athion.net/job/FastAsyncWorldEdit/ and the issue still persists.

Anything else?

No response

Start with the linked crash report, log, FAWE debugpaste, and reproduction videos, then compare the reported FAWE-only behavior with the WorldEdit test. Done means reproducing the random crash and identifying a fix that prevents it during FAWE commands, movement, teleportation, or disconnects.