TileEntity

Remove Cataclysm or try other builds

Make a test with another Launcher like AT Launcher or MultiMC

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

Try an alternative mod like Tree Harvester https://www.curseforge.com/minecraft/mc-mods/tree-harvester

Same issue without iris?

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

Make a test without the mod visuality

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

Looks like an issue with one of the create addons - remove these one by one

I have no idea - maybe it is directly an issue with mohist

Is this the correct crash-report? This one point to yungsapi (you will need an older build of it) Copycat is not compatible with Create 6 yet (also some other create addons) Keep on using Create 5 or remove incompatible addons The Copycat update is in the work and may be released in the next days https://www.curseforge.com/minecraft/mc-mods/copycats

sh is a shell script and can be opened with right-click - properties or right-click - edit file

It is mentioned at the bottom, before the error block Error loading class: com/yungnickyoung/minecraft/yungsapi/util/MixinUtils (java.lang.ClassNotFoundException: com.yungnickyoung.minecraft.yungsapi.util.MixinUtils) This points to yungsapi - ClassNotFoundException means the mod is not present or can't be read (wrong version, for example)

And without lootr?

Looks like yungsapi or a mod requiring it

Do you use Connector with fabric-api? The used build is not compatible with the Forge version

Is there a change without this mod?

Maybe an issue with modernfix

Same issue without Embeddium?

Try other builds of this modpack or report it to the modpack creator Looks like an issue with environmental, naturalist and/or crafttweaker

Looks like an issue with abyssalsovereigns - this mod has functions that are not working on a server (client-side-only mod)

The level.dat contains an invalid tag ID (115) Try to load the world in singleplayer - then test this world on the server

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

I have no idea Remove mods one by one or in groups

And without betterfortresses?