TileEntity

Maybe there is a mod requiring EpicFight

Maybe an issue with embers

Replace Epicfight with an older build

Use the Minecraft own Blast Furnace - not a one added by mods So a Minecraft Blast Furnace with Iron and Coal for example

Then it may refer to an ID issue - i have no idea id this is fixable

Looks like a conflict with fossilsarcheology - make a test without this mod

The world is corrupted - also add the latest.log - maybe there are some more information

Try to open this world in singleplayer

Make a test without radium and swem

Use a new world

This refers to the llibrary issue Replace llibrary with the unofficial update from the latest comments: https://github.com/iLexiconn/LLibrary/issues/200 Or add these 2 mods: https://modrinth.com/mod/bugtorch/version/1.2.13 https://modrinth.com/mod/unimixins/version/1.7.10-0.1.17

And without modernfix?

Make a test without ferritecore

Also try other builds of it or remove it once

Do the same for levelup2

Is there a forge server/ forge universal jar file?

You are starting a vanilla server - not a forge server

Downgrade mysticalcustomization

Maybe an issue with nifty

Remove justleveling from the server

Downgrade iceandfire and/or spartanfire

Try other builds of this mod

Change the RAM allocation from -Xmx1024M to -Xmx4G

Make a test without Epic Knights: Shields, Armor and Weapons

Do you use a resourcepack?