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My forge server is crashing and I can't figure out why

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Posted March 30, 20205 yr

I have the crash report listed below. My server has 2 GB of Ram dedicated for 65 Mods. I'm able to run it Singleplayer just fine. Any thoughts?

---- Minecraft Crash Report ----
// I feel sad now :(

Time: 3/30/20 6:36 PM
Description: Exception in server tick loop

cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient
   at cpw.mods.fml.common.LoadController.transition(LoadController.java:163)
   at cpw.mods.fml.common.Loader.initializeMods(Loader.java:739)
   at cpw.mods.fml.server.FMLServerHandler.finishServerLoading(FMLServerHandler.java:97)
   at cpw.mods.fml.common.FMLCommonHandler.onServerStarted(FMLCommonHandler.java:319)
   at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:210)
   at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387)
   at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)
Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient
   at DamageIndicatorsMod.server.DIProxy.register(DIProxy.java:11)
   at DamageIndicatorsMod.DIMod.load(DIMod.java:64)
   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 cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:532)
   at sun.reflect.GeneratedMethodAccessor3.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.EventSubscriber.handleEvent(EventSubscriber.java:74)
   at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
   at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
   at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
   at com.google.common.eventbus.EventBus.post(EventBus.java:275)
   at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:212)
   at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190)
   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.EventSubscriber.handleEvent(EventSubscriber.java:74)
   at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
   at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
   at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
   at com.google.common.eventbus.EventBus.post(EventBus.java:275)
   at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:119)
   at cpw.mods.fml.common.Loader.initializeMods(Loader.java:737)
   ... 5 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)
   ... 33 more
Caused by: java.lang.RuntimeException: Attempted to load class bjf for invalid side SERVER
   at cpw.mods.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:50)
   at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)
   at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)
   ... 35 more

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

-- System Details --
Details:
   Minecraft Version: 1.7.10
   Operating System: Linux (amd64) version 4.4.196-1.el7.elrepo.x86_64
   Java Version: 1.8.0_242, Oracle Corporation
   Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
   Memory: 1677706728 bytes (1599 MB) / 2113929216 bytes (2016 MB) up to 2113929216 bytes (2016 MB)
   JVM Flags: 18 total; -XX:+UnlockExperimentalVMOptions -Xmx2016M -Xms2016M -XX:MaxRAM=2272M -XX:MetaspaceSize=32m -XX:MaxMetaspaceSize=288m -XX:CompressedClassSpaceSize=64m -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UseG1GC -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:MaxGCPauseMillis=100 -XX:TargetSurvivorRatio=90 -XX:G1MixedGCLiveThresholdPercent=35 -XX:+ParallelRefProcEnabled -XX:G1NewSizePercent=50 -XX:G1MaxNewSizePercent=80
   AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
   IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
   FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1614 66 mods loaded, 66 mods active
   States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
   UCHI   mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
   UCHI   FML{7.10.99.99} [Forge Mod Loader] (forge-1.7.10-10.13.4.1614.jar)
   UCHI   Forge{10.13.4.1614} [Minecraft Forge] (forge-1.7.10-10.13.4.1614.jar)
   UCHI   CodeChickenCore{1.0.7.46} [CodeChicken Core] (minecraft.jar)
   UCHI   NotEnoughItems{1.0.5.111} [Not Enough Items] (NotEnoughItems-1.7.10-1.0.5.111-universal.jar)
   UCHI   malisiscore{1.7.10-0.10.5+unknown-b0.git-unknown} [Malisis Core] (Malisis' Core.jar)
   UCHI   AnimationAPI{1.2.4} [AnimationAPI] (AnimationAPI.jar)
   UCHI   Baubles{1.0.1.10} [Baubles] (Baubles-Mod-1.7.10.jar)
   UCHI   BiblioCraft{1.10.5} [BiblioCraft] (BiblioCraft.jar)
   UCHI   Mantle{1.7.10-0.3.2.jenkins191} [Mantle] (Mantle-1.7.10-0.3.2b.jar)
   UCHI   Natura{2.2.0} [Natura] (natura-1.7.10-2.2.0.1.jar)
   UCHI   BiblioWoodsNatura{1.5} [BiblioWoods Natura Edition] (BiblioWoods[Natura][v1.5].jar)
   UCHI   BiomesOPlenty{2.1.0} [Biomes O' Plenty] (BiomesOPlenty-1.7.10-2.1.0.1396-universal.jar)
   UCHI   AWWayofTime{v1.3.3} [Blood Magic: Alchemical Wizardry] (BloodMagic-1.7.10-1.3.3-17.jar)
   UCHI   Thaumcraft{4.2.3.5} [Thaumcraft] (Thaumcraft-1.7.10-4.2.3.5.jar)
   UCHI   Botania{r1.8-249} [Botania] (Botania-Mod-1.7.10.jar)
   UCHI   CarpentersBlocks{3.3.6} [Carpenter's Blocks] (Carpenter's Blocks.jar)
   UCHI   ForgeMultipart{1.2.0.345} [Forge Multipart] (ForgeMultipart-1.7.10-1.2.0.345-universal.jar)
   UCHI   chisel{2.3.10.37} [Chisel 2] (Chisel 2.jar)
   UCHE   DamageIndicatorsMod{3.2.3} [Damage Indicators] (Damage Indicators.jar)
   UCHI   McMultipart{1.2.0.345} [Minecraft Multipart Plugin] (ForgeMultipart-1.7.10-1.2.0.345-universal.jar)
   UCHI   ForgeRelocation{0.0.1.4} [ForgeRelocation] (ForgeRelocation-1.7.10-0.0.1.4-universal.jar)
   UCHI   MCFrames{1.0} [MCFrames] (ForgeRelocation-1.7.10-0.0.1.4-universal.jar)
   UCHI   RelocationFMP{0.0.1.2} [RelocationFMP] (ForgeRelocationFMP-1.7.10-0.0.1.2-universal.jar)
   UCHI   iChunUtil{4.2.2} [iChunUtil] (iChunUtil.jar)
   UCHI   Hats{4.0.1} [Hats] (Hats.jar)
   UCHI   InventoryPets{1.1.2a} [Inventory Pets] (Inventory Pets.jar)
   UCHI   IronChest{6.0.60.741} [Iron Chest] (Iron Chest.jar)
   UCHI   journeymap{5.1.4p2} [JourneyMap] (journeymap-1.7.10-5.1.4p2-unlimited.jar)
   UCHI   lucky{5.1.0} [Lucky Block] (LuckyBlock.jar)
   UCHI   malisisdoors{1.7.10-1.4.3} [Malisis' Doors] (Malisis' Doors.jar)
   UCHI   battlegear2{1.7.10} [Mine & Blade Battlegear 2 - Bullseye] (Mine & Blade Battlegear 2 - Bullseye.jar)
   UCHI   Morph{0.9.1} [Morph] (Morph.jar)
   UCHI   cfm{3.4.7} [ï¿½9MrCrayfish's Furniture Mod] (MrCrayfish's Furniture Mod.jar)
   UCHI   MrTJPCoreMod{1.1.0.33} [MrTJPCore] (MrTJPCore-1.7.10-1.1.0.33-universal.jar)
   UCHI   MutantCreatures{1.4.8} [Mutant Creatures] (Mutant Creatures.jar)
   UCHI   NEIAddons{1.12.10.33} [NEI Addons] (NEI Addons- Ex Nihilo.jar)
   UCHI   NEIAddons|AppEng{1.12.10.33} [NEI Addons: Applied Energistics 2] (NEI Addons- Ex Nihilo.jar)
   UCHI   NEIAddons|Botany{1.12.10.33} [NEI Addons: Botany] (NEI Addons- Ex Nihilo.jar)
   UCHI   NEIAddons|Forestry{1.12.10.33} [NEI Addons: Forestry] (NEI Addons- Ex Nihilo.jar)
   UCHI   NEIAddons|CraftingTables{1.12.10.33} [NEI Addons: Crafting Tables] (NEI Addons- Ex Nihilo.jar)
   UCHI   NEIAddons|ExNihilo{1.12.10.33} [NEI Addons: Ex Nihilo] (NEI Addons- Ex Nihilo.jar)
   UCHI   recipehandler{1.7.10} [NoMoreRecipeConflict] (NoMoreRecipeConflict-0.3(1.7.10).jar)
   UCHI   OreSpawn{1.7.10.20.3} [OreSpawn] (orespawn-1.7.10-20.3 (1).zip)
   UCHI   PortalGun{4.0.0-beta-4} [PortalGun] (PortalGun-4.0.0-beta-4.jar)
   UCHI   ProjectE{1.7.10-PE1.10.1} [ProjectE] (ProjectE-1.7.10-PE1.10.1.jar)
   UCHI   ProjRed|Core{4.7.0pre12.95} [ProjectRed Core] (ProjectRed-Base-1.7.10.jar)
   UCHI   ProjRed|Transmission{4.7.0pre12.95} [ProjectRed Transmission] (ProjectRed-1.7.10-Integration.jar)
   UCHI   ProjRed|Transportation{4.7.0pre12.95} [ProjectRed Transportation] (ProjectRed-1.7.10-Mechanical.jar)
   UCHI   ProjRed|Exploration{4.7.0pre12.95} [ProjectRed Exploration] (ProjectRed-1.7.10-World.jar)
   UCHI   Waila{1.5.10} [Waila] (Waila-1.5.10_1.7.10.jar)
   UCHI   TConstruct{1.7.10-1.8.8.build988} [Tinkers' Construct] (TConstruct-1.7.10-1.8.8.jar)
   UCHI   ProjRed|Compatibility{4.7.0pre12.95} [ProjectRed Compatibility] (ProjectRed-1.7.10-Compat.jar)
   UCHI   ProjRed|Integration{4.7.0pre12.95} [ProjectRed Integration] (ProjectRed-1.7.10-Integration.jar)
   UCHI   ProjRed|Fabrication{4.7.0pre12.95} [ProjectRed Fabrication] (ProjectRed-1.7.10-Fabrication.jar)
   UCHI   ProjRed|Illumination{4.7.0pre12.95} [ProjectRed Illumination] (ProjectRed-1.7.10-Lighting.jar)
   UCHI   ProjRed|Expansion{4.7.0pre12.95} [ProjectRed Expansion] (ProjectRed-1.7.10-Mechanical.jar)
   UCHI   AS_Ruins{15.4} [Ruins Spawning System] (Ruins-1.7.10.jar)
   UCHI   SSTOW{1.7.10-0.1-RC9-7} [Soul Shards: The Old Ways] (Soul Shards- The Old Ways.jar)
   UCHI   secretroomsmod{4.7.1} [The SecretRoomsMod] (The SecretRoomsMod.jar)
   UCHI   VeinMiner{0.36.0_1.7.10-28a7f13} [Vein Miner] (VeinMiner-1.7.10-0.36.0.496+28a7f13.jar)
   UCHI   VeinMinerModSupport{0.36.0_1.7.10-28a7f13} [Mod Support] (VeinMiner-1.7.10-0.36.0.496+28a7f13.jar)
   UCHI   WailaHarvestability{1.1.5} [Waila Harvestability] (WailaHarvestability-mc1.7.10-1.1.5.jar)
   UCHI   witchery{0.24.1} [Witchery] (Witchery.jar)
   UCHI   witcherypatch{1.0.0} [WitcheryPatch] (WitcheryPatch-1.7.10-1.0.0.jar)
   UCHI   ForgeMicroblock{1.2.0.345} [Forge Microblocks] (ForgeMultipart-1.7.10-1.2.0.345-universal.jar)
   Mantle Environment: Environment healthy.
   TConstruct Environment: Environment healthy.
   Profiler Position: N/A (disabled)
   Is Modded: Definitely; Server brand changed to 'fml,forge'
   Type: Dedicated Server (map_server.txt)

March 30, 20205 yr

1.7 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.

https://forums.minecraftforge.net/topic/82762-my-forge-server-is-crashing-and-i-cant-figure-out-why/

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1.20.1 Client crashing when joining the ender portal

Maybe an issue with blueprint or a mod requiring it

By TileEntity · 18 hours ago18 hr
1.20.1 Client crashing when joining the ender portal

Fair point!
Here's the new crash report

https://pastebin.com/NRVQpRF1

By Dork-A-Doodle · 23 hours ago23 hr
1.20.1 Client crashing when joining the ender portal

Post a new log after removing that mod, may point to the true culprit, or be a completely different error entirely.

By Ugdhar · Sunday at 11:26 PM1 day
Exit Code 1

GitHub
Exception in thread "main" java.lang.RuntimeException: ja...
Context Unable to enter the game Crash Report https://mclo.gs/k5areKjFound this doing a google search for "ClassNotFoundException: com.simibubi.create.foundation.utility.Lang", it was the first result.

By Ugdhar · Sunday at 11:25 PM1 day
Exit Code 1

Hello
I am trying to run a modpack but every time I start the game it crashes and shows Exit Code 1

Attached is the log

https://pastebin.com/7VdHbXEd

By ejplooster · Posted Sunday at 11:12 PM1 day

tanker

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My forge server is crashing and I can't figure out why

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