TileEntity

Add the crash-report or latest.log (logs-folder) with sites like https://paste.ee/ and paste the link to it here

Looks like an issue with mystcraft - backup the world and make a test without it

Use Java 17

There is an issue with pixelmon - maybe a conflict with fancymenu

It is some kind of conflict/incompatibility with botarium

Add crash-reports with sites like https://paste.ee/ Change the RAM allocation from -Xmx4096M to -Xmx6G

Then it is another mod not mentioned Maybe use a pre-configured modpack from curseforge - most of these already have a server pack Use such a modpack as working base and add some mods

Remove the client-side-only mods from the server Like ironsspellbooks

Did you allocate more RAM?

Make a test without lithium

Add the crash-report or latest.log (logs-folder) with sites like https://paste.ee/ and paste the link to it here

Make a test without Create

If you are using AMD/ATI, get the latest drivers from their website - do not update via system

Delete the flywheel-client.toml file in your config folder and test it again

Make a test with the latest create build and the 2 addons - then add the new crash-report

https://www.curseforge.com/minecraft/mc-mods/create/files/all?page=1&pageSize=20&version=1.20.1&gameVersionTypeId=1

Remove the mod Registrate

Add epherolib https://www.curseforge.com/minecraft/mc-mods/epherolib and try an older builds of Create

Maybe some kind of memory leak Make a test without these mods: starlight flans cupboard modernfix supplementaries betterendisland

Make a test without modernfix and chunkpregen

Create a new world with the same settings (gamemode, gamerules etc) and copy the level.dat, level.dat_old and session.lock from the new world to the broken one - delete the new world and test the broken world again

The level.dat is broken Backup and delete this file and rename level.dat_old to level.dat and test it again

Maybe an issue with resourcefullib-forge

Make a test without the mod exposure

Remove ArcaneAbilities or add relics