PLEASE Help With Enigmatica 2: Expert - Extended Server Issue

[TheQueas]

I'm at my wits end with this. I am trying to run a server for the Enigmatica 2: Expert - Extended modpack (here: https://www.curseforge.com/minecraft/modpacks/enigmatica-2-expert-extended), and I CANNOT get this thing to run. I can't tell what exactly is going wrong. It's a massive error file that I don't have the ability to parse through. I've tried so many things, but I know this modpack works on the client and server side, because I was able to get this running on my windows machine (which would not be ideal for me to use long term). So, I'm confident this is not an issue with the modpack itself.

I'm running on Ubuntu LTS 24.04. Here is my docker compose file:

---
services:
  mc_mod:
    image: itzg/minecraft-server:java8
    container_name: minecraft_modded
    tty: true
    stdin_open: true
    ports:
      - "25565:25565"
    environment:
      EULA: "TRUE"
      TZ: "America/New_York"
      MEMORY: 4G
      MODPACK_PLATFORM: "AUTO_CURSEFORGE"
      VERSION: "1.12.2"
      CF_API_KEY: ${CF_API_KEY}
      CF_PAGE_URL: https://www.curseforge.com/minecraft/modpacks/enigmatica-2-expert-extended/files/5941073
    volumes:
      # attach the relative directory 'data' to the container's /data path
      - /home/dr-cunt-phd/Minecraft/Data_Mod:/data

This does seem to download mods and starts setting up the server, and then everything starts going wrong. Here is the Crash Report:

---- Minecraft Crash Report ----
// Lolis deobfuscated this stacktrace using MCP's stable-39 mappings.
// There are four lights!

Time: 2024-11-30 21:23:47 EST
Description: Exception in server tick loop

net.minecraftforge.fml.common.LoaderException: java.lang.NoClassDefFoundError: net/minecraft/client/entity/EntityPlayerSP
    at net.minecraftforge.fml.common.AutomaticEventSubscriber.inject(AutomaticEventSubscriber.java:89)
    at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:612)
    at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
    at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
    at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
    at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
    at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(MixinForgeLoadController.java:219)
    at net.minecraftforge.fml.common.LoadController.propogateStateMessage(MixinForgeLoadController.java:197)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
    at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
    at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
    at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
    at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.distributeStateMessage(MixinForgeLoadController.java:136)
    at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:595)
    at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:98)
    at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:333)
    at net.minecraft.server.dedicated.DedicatedServer.init(DedicatedServer.java:125)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:1802)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/entity/EntityPlayerSP
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
    at java.lang.Class.privateGetPublicMethods(Class.java:2902)
    at java.lang.Class.getMethods(Class.java:1615)
    at net.minecraftforge.fml.common.eventhandler.EventBus.register(EventBus.java:82)
    at net.minecraftforge.fml.common.AutomaticEventSubscriber.inject(AutomaticEventSubscriber.java:82)
    ... 31 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.entity.EntityPlayerSP
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
    ... 37 more
Caused by: net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerException: Exception in class transformer net.minecraftforge.fml.common.asm.transformers.SideTransformer@73bb1337 from coremod FMLCorePlugin
    at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:260)
    at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)
    ... 39 more
Caused by: java.lang.RuntimeException: Attempted to load class bud for invalid side SERVER
    at net.minecraftforge.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:62)
    at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:256)
    ... 41 more

No Mixin Metadata is found in the Stacktrace.

I'll attach the full crash report file in case that's helpful. Please if anyone has any help they can offer that would be fantastic because I would really like to make this work!
crash-2024-11-30_21.23.47-server.txt

[itzg]

If you're getting a crash report, then the challenge is to find the improper mod to exclude. I'd also suggest googling around and search for reported issues such as

https://forums.minecraftforge.net/topic/145954-enigmatica-2-expert-crash/