Hi fellow modders, 
I dont understand crash reports and i would be thankful for help with this one.

Me and my friend are running minecraft modded server but for some reason it cant launch it just keeps popping errors up.
 

---- Minecraft Crash Report ----

 

WARNING: coremods are present:

  TheBetweenlandsLoadingPlugin (TheBetweenlands-3.9.6-core.jar)

  MekanismCoremod (Mekanism-1.12.2-9.8.3.390.jar)

  SuperMartijn642's Core Lib Plugin (_supermartijn642corelib-1.1.17a-forge-mc1.12.jar)

  OpenModsCorePlugin (OpenModsLib-1.12.2-0.12.2.jar)

  MixinBooter (!mixinbooter-9.4.jar)

  IELoadingPlugin (ImmersiveEngineering-core-0.12-92.jar)

  CTMCorePlugin (CTM-MC1.12.2-1.0.2.31.jar)

  UniDictCoreMod (UniDict-1.12.2-3.0.10.jar)

  LootrCore (lootr-1.12.2-0.6.2.jar)

  ForgelinPlugin (Forgelin-1.8.3.jar)

  llibrary (llibrary-core-1.0.11-1.12.2.jar)

  EnderCorePlugin (EnderCore-1.12.2-0.5.76-core.jar)

  HCASM (HammerLib-1.12.2-12.2.56.jar)

  IvToolkit (IvToolkit-1.3.3-1.12.jar)

Contact their authors BEFORE contacting forge

 

// Why is it breaking :(

 

Time: 20/10/24 14:58

Description: Exception in server tick loop

 

net.minecraftforge.fml.common.LoaderException: java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient

    at net.minecraftforge.fml.common.AutomaticEventSubscriber.inject(AutomaticEventSubscriber.java:89)

    at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:612)

    at sun.reflect.GeneratedMethodAccessor11.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(LoadController.java:219)

    at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.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(LoadController.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.func_71197_b(DedicatedServer.java:125)

    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486)

    at java.lang.Thread.run(Thread.java:748)

Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient

    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.multiplayer.WorldClient

    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)

    at java.lang.ClassLoader.loadClass(ClassLoader.java:419)

    at java.lang.ClassLoader.loadClass(ClassLoader.java:352)

    ... 37 more

Caused by: net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerException: Exception in class transformer net.minecraftforge.fml.common.asm.transformers.SideTransformer@57d0fc89 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 bsb 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.

There is a client-side-only mod in your server's mods folder

The mod is not mentioned

Add a screenshot of your server's mods folder

IMG 1

IMG 2

IMG 3

IMG 4

IMG 5

These should be all of them. The forge-installer isnt there anymore

Edited October 20, 20241 yr by Crazyondra16