Hello! I recently updated my world from 0.4.21 to 0.4.25
The world seemed to work fine at first, but while navigating with a jetpack to a new chunk, everything crashed. A structure I never found before / I was using a treasure map given by a cartographer. 2 other players was online, nothing in particular to report from their part.

The whole server crashed. Latest backup was 24 hours earlier because I didn't dare to check the changelogs (my bad)

Since then, I try to salvage my world but I keep getting various crash report, here is the latest
https://pastebin.com/unsUH4wD

I tried to remove my playerdata file. It didn't work, so I removed all the playerdata files.

I took the world in singleplayer and it's working fine, I can load and play as usual. But As soon as I port this save to my server, it keeps crashing in less than a minute.

In the latest lines before crash I kept getting an unknown username for a UUID and playeradvancements issues.
So I added a random Username no space in my usernamecache.json, but I don't know how I should fix playeradvancements. This isn't a connected player, he isn't recognised on my server, so maybe a random entity ?

The crashing report is showing Mekanism and Pipez energy and we know we had many issues with the energy cables, especially the nitro cables in 0.4.21 could this be related ?

I tried to run the Region Fixer only the idcounts.dat was unreadable. So I removed the file and removes all the map files.
Still not working.

I'm out of idea.

The server watchdog is shutting down your server due to a tick taking too long.

Description: Watching Server
 
java.lang.Error: ServerHangWatchdog detected that a single server tick took 60.00 seconds (should be max 0.05)

While this won't fix the lag, you should be able to stop the crashes by setting max-tick-time to -1 in your server.properties file.

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