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The game crashed whilst exception in server tick loop Error: java.lang.NoClassDefFoundError: org/apache/logging/log4j/util/Refle

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January 9, 20233 yr

I need help, when I load any world the game crashes and says the following:

---- Minecraft Crash Report ----
// My bad.

Time: 08/01/23 21:47
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: org/apache/logging/log4j/util/ReflectionUtil
   at com.sk89q.worldedit-fabric.l4j.Log4jLoggerFactory.getContext(Log4jLoggerFactory.java:42) ~[?:?] {re:classloading}
   at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:47) ~[log4j-api-2.15.0.jar:2.15.0] {}
   at com.sk89q.worldedit-fabric.l4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:29) ~[?:?] {re:classloading}
   at com.sk89q.worldedit-fabric.slf4j.LoggerFactory.getLogger(LoggerFactory.java:363) ~[?:?] {re:classloading}
   at com.sk89q.worldedit-fabric.slf4j.LoggerFactory.getLogger(LoggerFactory.java:388) ~[?:?] {re:classloading}
   at com.sk89q.worldedit.WorldEdit.<clinit>(WorldEdit.java:113) ~[?:?] {re:classloading}
   at com.sk89q.worldedit.extension.platform.AbstractPlatform.<init>(AbstractPlatform.java:41) ~[?:?] {re:classloading}
   at com.sk89q.worldedit.forge.ForgePlatform.<init>(ForgePlatform.java:69) ~[?:?] {re:classloading}
   at com.sk89q.worldedit.forge.ForgeWorldEdit.setupPlatform(ForgeWorldEdit.java:142) ~[?:?] {re:classloading}
   at com.sk89q.worldedit.forge.ForgeWorldEdit.serverStarted(ForgeWorldEdit.java:209) ~[?:?] {re:classloading}
   at net.minecraftforge.eventbus.ASMEventHandler_3_ForgeWorldEdit_serverStarted_FMLServerStartedEvent.invoke(.dynamic) ~[?:?] {}
   at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:85) ~[eventbus-4.0.0.jar:?] {}
   at net.minecraftforge.eventbus.EventBus$$Lambda$3226/1093828110.invoke(Unknown Source) ~[?:?] {}
   at net.minecraftforge.eventbus.EventBus.post(EventBus.java:302) ~[eventbus-4.0.0.jar:?] {}
   at net.minecraftforge.eventbus.EventBus.post(EventBus.java:283) ~[eventbus-4.0.0.jar:?] {}
   at net.minecraftforge.fml.server.ServerLifecycleHooks.handleServerStarted(ServerLifecycleHooks.java:106) ~[?:?] {re:classloading}
   at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:622) [?:?] {re:classloading,pl:accesstransformer:B}
   at net.minecraft.server.MinecraftServer.func_240783_a_(MinecraftServer.java:232) [?:?] {re:classloading,pl:accesstransformer:B}
   at net.minecraft.server.MinecraftServer$$Lambda$6397/1353256473.run(Unknown Source) [?:?] {}
   at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51] {}
Caused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.util.ReflectionUtil
   at java.lang.ClassLoader.findClass(ClassLoader.java:530) ~[?:1.8.0_51] {}
   at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_51] {}
   at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:94) ~[modlauncher-8.1.3.jar:?] {re:classloading}
   at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_51] {}
   ... 20 more

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
   Minecraft Version: 1.16.5
   Minecraft Version ID: 1.16.5
   Operating System: Windows 10 (amd64) version 10.0
   Java Version: 1.8.0_51, Oracle Corporation
   Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
   Memory: 3061716608 bytes (2919 MB) / 4294967296 bytes (4096 MB) up to 4294967296 bytes (4096 MB)
   CPUs: 4
   JVM Flags: 10 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -XX:+IgnoreUnrecognizedVMOptions -Xmx4G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
   ModLauncher: 8.1.3+8.1.3+main-8.1.x.c94d18ec
   ModLauncher launch target: fmlclient
   ModLauncher naming: srg
   ModLauncher services:
       /mixin-0.8.4.jar mixin PLUGINSERVICE
       /eventbus-4.0.0.jar eventbus PLUGINSERVICE
       /forge-1.16.5-36.2.34.jar object_holder_definalize PLUGINSERVICE
       /forge-1.16.5-36.2.34.jar runtime_enum_extender PLUGINSERVICE
       /accesstransformers-3.0.1.jar accesstransformer PLUGINSERVICE
       /forge-1.16.5-36.2.34.jar capability_inject_definalize PLUGINSERVICE
       /forge-1.16.5-36.2.34.jar runtimedistcleaner PLUGINSERVICE
       /mixin-0.8.4.jar mixin TRANSFORMATIONSERVICE
       /optifine.jar.disabled.jar OptiFine TRANSFORMATIONSERVICE
       /forge-1.16.5-36.2.34.jar fml TRANSFORMATIONSERVICE
   FML: 36.2
   Forge: net.minecraftforge:36.2.34
   FML Language Providers:
       [email protected]
       minecraft@1
   Mod List:
       forge-1.16.5-36.2.34-client.jar |Minecraft |minecraft |1.16.5 |DONE |Manifest: NOSIGNATURE
       performant-1.16.2-5-3.98m.jar |Performant |performant |3.73m |DONE |Manifest: NOSIGNATURE
       TechnologyMod_2022_Beta_Versión.jar |Technologymod |technologymod |1.0.0 |DONE |Manifest: NOSIGNATURE
       obfuscate-0.6.1-1.16.3.jar |Obfuscate |obfuscate |0.6.1 |DONE |Manifest: e1:59:1a:56:ec:97:b3:d0:b3:4b:25:06:1f:83:b0:f4:fd:0c:24:e3:6d:ea:94:b1:9f:22:b0:38:13:60:88:ea
       TechnologyMod_1-16-5.jar |Modsummer |modsummer |1.0.0 |DONE |Manifest: NOSIGNATURE
       worldedit-mod-7.2.4.jar |WorldEdit |worldedit |7.2.4+5723-e3bfc64 |DONE |Manifest: NOSIGNATURE
       cfm-7.0.0-pre21-mc1.16.3.jar |MrCrayfish's Furniture Mod |cfm |7.0.0-pre21 |DONE |Manifest: NOSIGNATURE
       additional_lights-1.16.4-2.1.3.jar |Additional Lights |additional_lights |2.1.3 |DONE |Manifest: NOSIGNATURE
       vehicle-mod-0.45.2-1.16.3.jar |MrCrayfish's Vehicle Mod |vehicle |0.45.2 |DONE |Manifest: NOSIGNATURE
       lightblock-forge-1.16.5-1.0+3.jar |lightblock |lightblock |1.16.5-1.0+3 |DONE |Manifest: NOSIGNATURE
       Simply-Seasons-1.16.5-1.0.11.jar |Simply Seasons |simplyseasons |1.16.5-1.0.11 |DONE |Manifest: NOSIGNATURE
       simplylight-1.16.4-1.1.2.jar |Simply Light |simplylight |1.16.4-1.1.2 |DONE |Manifest: NOSIGNATURE
       morecfm-1.2.1-1.16.3.jar |MrCrayfish's More Furniture Mo|morecfm |1.2.1 |DONE |Manifest: NOSIGNATURE
       forge-1.16.5-36.2.34-universal.jar |Forge |forge |36.2.34 |DONE |Manifest: 22:af:21:d8:19:82:7f:93:94:fe:2b:ac:b7:e4:41:57:68:39:87:b1:a7:5c:c6:44:f9:25:74:21:14:f5:0d:90
       Xaeros_Minimap_21.4.4_Forge_1.16.5 (1).jar |Xaero's Minimap |xaerominimap |21.4.4 |DONE |Manifest: NOSIGNATURE
       MorePlayerModels-1.16.5.20220731.jar |More Player Models |moreplayermodels |1.16.5.20220731 |DONE |Manifest: NOSIGNATURE
       DynamicSurroundings-1.16.5-4.0.5.0.jar |§3Dynamic Surroundings |dsurround |4.0.5.0 |DONE |Manifest: NOSIGNATURE
       XaerosWorldMap_1.13.1_Forge_1.16.5.jar |Xaero's World Map |xaeroworldmap |1.13.1 |DONE |Manifest: NOSIGNATURE
       modernlife-1.16.5-1.40.jar |Modern Life |modernlife |1.16.5-1.40 |DONE |Manifest: NOSIGNATURE
       sit-1.16.2-v1.3.jar |Sit |sit |v1.3 |DONE |Manifest: NOSIGNATURE
       Penguin-Lib-1.16.5-0.4.1.jar |Penguin Lib |penguinlib |1.16.5-0.4.1-35 |DONE |Manifest: NOSIGNATURE
   Crash Report UUID: 604089f4-200c-44ec-842e-dc9ce0f5c50c
   Player Count: 0 / 8; []
   Data Packs: vanilla, mod:performant (incompatible), mod:technologymod, mod:obfuscate (incompatible), mod:modsummer, mod:worldedit (incompatible), mod:cfm (incompatible), mod:additional_lights, mod:vehicle (incompatible), mod:lightblock, mod:simplyseasons (incompatible), mod:simplylight, mod:morecfm, mod:forge, mod:xaerominimap, mod:moreplayermodels, mod:dsurround, mod:xaeroworldmap, mod:modernlife, mod:sit, mod:penguinlib (incompatible)
   Type: Integrated Server (map_client.txt)
   Is Modded: Definitely; Client brand changed to 'forge'
   OptiFine Version: OptiFine_1.16.5_HD_U_G8
   OptiFine Build: 20210515-161946
   Render Distance Chunks: 12
   Mipmaps: 4
   Anisotropic Filtering: 1
   Antialiasing: 0
   Multitexture: false
   Shaders: null
   OpenGlVersion: 4.6.0 Compatibility Profile Context 22.11.1.221110
   OpenGlRenderer: Radeon RX550/550 Series
   OpenGlVendor: ATI Technologies Inc.
   CpuCount: 4

January 11, 20233 yr

The version you are using is no longer supported on this forum.

Please update to a modern version of Minecraft to receive support.

This is my Forum Signature, I am currently attempting to transform it into a small guide for fixing easier issues using spoiler blocks to keep things tidy.

As the most common issue I feel I should put this outside the main bulk:

The only official source for Forge is https://files.minecraftforge.net, and the only site I trust for getting mods is CurseForge.

If you use any site other than these, please take a look at the StopModReposts project and install their browser extension, I would also advise running a virus scan.

For players asking for assistance with Forge please expand the spoiler below and read the appropriate section(s) in its/their entirety.

Spoiler

Logs (Most issues require logs to diagnose):

Spoiler

Please post logs using one of the following sites (Thank you Lumber Wizard for the list):

https://gist.github.com/: 100MB Requires member (Free)

https://pastebin.com/: 512KB as guest, 10MB as Pro ($$$)

https://hastebin.com/: 400KB

Do NOT use sites like Mediafire, Dropbox, OneDrive, Google Drive, or a site that has a countdown before offering downloads.

What to provide:

...for Crashes and Runtime issues:

Minecraft 1.14.4 and newer:

Post debug.log

Older versions:

Please update...

...for Installer Issues:

Post your installer log, found in the same place you ran the installer

This log will be called either installer.log or named the same as the installer but with .log on the end

Note for Windows users:

Windows hides file extensions by default so the installer may appear without the .jar extension then when the .log is added the log will appear with the .jar extension

Where to get it:

Mojang Launcher: When using the Mojang launcher debug.log is found in .minecraft\logs.

Curse/Overwolf: If you are using the Curse Launcher, their configurations break Forge's log settings, fortunately there is an easier workaround than I originally thought, this works even with Curse's installation of the Minecraft launcher as long as it is not launched THROUGH Twitch:

Spoiler

Make sure you have the correct version of Forge installed (some packs are heavily dependent on one specific build of Forge)
Make a launcher profile targeting this version of Forge.
Set the launcher profile's GameDir property to the pack's instance folder (not the instances folder, the folder that has the pack's name on it).
Now launch the pack through that profile and follow the "Mojang Launcher" instructions above.

Video:

Spoiler

or alternately,

Fallback ("No logs are generated"):

If you don't see logs generated in the usual place, provide the launcher_log.txt from .minecraft

Server Not Starting:

Spoiler

If your server does not start or a command window appears and immediately goes away, run the jar manually and provide the output.

Reporting Illegal/Inappropriate Adfocus Ads:

Spoiler

Get a screenshot of the URL bar or copy/paste the whole URL into a thread on the General Discussion board with a description of the Ad.

Lex will need the Ad ID contained in that URL to report it to Adfocus' support team.

Posting your mod as a GitHub Repo:

Spoiler

When you have an issue with your mod the most helpful thing you can do when asking for help is to provide your code to those helping you. The most convenient way to do this is via GitHub or another source control hub.

When setting up a GitHub Repo it might seem easy to just upload everything, however this method has the potential for mistakes that could lead to trouble later on, it is recommended to use a Git client or to get comfortable with the Git command line. The following instructions will use the Git Command Line and as such they assume you already have it installed and that you have created a repository.

Open a command prompt (CMD, Powershell, Terminal, etc).
Navigate to the folder you extracted Forge’s MDK to (the one that had all the licenses in).
Run the following commands:
1. git init
2. git remote add origin [Your Repository's URL]
  - In the case of GitHub it should look like: https://GitHub.com/[Your Username]/[Repo Name].git
3. git fetch
4. git checkout --track origin/master
5. git stage *
6. git commit -m "[Your commit message]"
7. git push
Navigate to GitHub and you should now see most of the files.
- note that it is intentional that some are not synced with GitHub and this is done with the (hidden) .gitignore file that Forge’s MDK has provided (hence the strictness on which folder git init is run from)
Now you can share your GitHub link with those who you are asking for help.

[Workaround line, please ignore]

This topic is now closed to further replies.

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How to search mods??

I think what you're looking for is curseforge.com
They are a platform for hosting mods and stuff, where you will probably find what you're looking for.

*edit: If you play Minecraft on mobile, I'm not sure what mods would be compatible with it. Minecraft Forge mods will not, as they are designed to run on the Java version of Minecraft.

By Ugdhar · 5 hours ago5 hr
How to search mods??

Aternos told me to go here for mods for my server and I’m in mobile and whenever I search no mods show up, all I see is forums- what do I do??

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Your modpack requires 7GB RAM to work - you can change the RAM allocation in the profile settings

The fixed one: EXDuZTBZ

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Hi, i am trying to start my custom modpack and i can start it but when it starts it loads and then stop at the loading screen and nothing happens is it a weak computer probleme (i have a weak laptop) or something else ? Tanks for the help to anyone who reads this

Curse forge profile code : CwWQ9Ht6

By rr13133 · Friday at 12:43 PM2 days
1.20.1 Error while loading, Cowardly refusing to...

Check the first error line and deactivate ALL mods related to the mod on the error line. It's probably a chisel and bits thing as that was the faulty mod for me.

By TopNapHat · Friday at 08:57 AM2 days

The game crashed whilst exception in server tick loop Error: java.lang.NoClassDefFoundError: org/apache/logging/log4j/util/Refle

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