TileEntity

Make a test without Vampirism

Downgrade Better_Dogs_X_Doggy_Talents_Next

Check for other builds of this mod

There are client-side-only mods in your server Like Radium ec_apotheosis_plugin is not working, too

Do not use the tlauncher - it is a cracked launcher - these are not supported

Remove the client-side-only mods like PresenceFootsteps

With picking mods, select the filter for the version and the Mod Loader With 1.21 most mods will be available for Forge and NeoForge So is you are using the Forge Mod Loader, do not add NeoForge mods

Make a test without the xaero mods

Update your AMD/ATI drivers - get the drivers from their website - do not update via system

Delete the sophisticatedbackpacks-common.toml file in your config folder

Make a test with a pre-configured modpack on curseforge - use such a modpack as working base

Use Java 8

Remove mahoutsukai and waystones

Re-add these one by one until you find the one causing this issue

Maybe an issue with connectorextras

Also remove elevatorid and jei

Yes - delete the jei-server.toml file

Maybe there are some more broken files - check the new crash-report - the file name is mentioned in the first lines If it is another crash, add it here

Check the worldsave (serverconfig folder)

Make a test without starlight, canary, voicechat and modernfix

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

Same issue without the xaero mods?

Looks like an issue with EC Compat for Apotheosis - try other builds of it or remove it Or try other builds of Apotheosis

Delete the curios-server.toml file in your config folder

Maybe fazcraft