TileEntity

Add crash-reports with sites like https://mclo.gs/ Make a test without CustomCursor and/or jeg (justenoughguns)

I have no idea - looks like the log just stops

An Ostimien mob from it is invalid at pos 170,66,-143 Check the config (lycanitesmobs-spawning.cfg) and temporarily disable Ostimien

Backup the world and make a test without alexscaves

It is 1.12.2 - I have no idea if there is a 1.12 pack

Also make a test without EMF (Entity Model Features)

Do you use features of inventory profiles next (ipnext) or is there a change without it?

Keep on this thread:

Remove rubidium - you are already using embeddium, which is a fork of rubidium

It is mentioned in the head lines: Thread: Server thread Stacktrace: at knot//net.minecraft.class_4781.localvar$mjg000$wilderwild$wilderWild$placeThickener(class_4781.java:563)

It is an issue with wilderwild - remove it or try other builds

Add crash-reports with sites like https://mclo.gs/ Delete the config of seasonhud in the config folder

Looks like supplementaries is conflicting with the mod spawn

Use a Custom Launcher like Technic Launcher and search for a "Clean Forge 1.12.2" modpack and use this as working base

Are you in creative mode? Are other players in creative mode?

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

Maybe Connector or enigmaticlegacy

Make a test without Ksyxis, Essential and lithium/radium

Same issue with another Launcher like MultiMC or AT Launcher?

Do you mean the forge installer?

Cracked Launchers are not supported

mts refers to Immersive Vehicles

But does this name contain special characters or spaces?

Cracked Launchers are not supported

Use the official Crafting Dead modpack as working base and add new mods one by one https://www.curseforge.com/minecraft/modpacks/crafting-dead-modpack