Jump to content
View in the app

A better way to browse. Learn more.

Forge Forums

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Exception in thread "main" org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError FORGE SERVER

Featured Replies

Posted

I have that error when i started my forge server, can anyone help me?

C:\Users\orden\Desktop\Servidor MC>REM Forge requires a configured set of both JVM and program arguments.

C:\Users\orden\Desktop\Servidor MC>REM Add custom JVM arguments to the user_jvm_args.txt

C:\Users\orden\Desktop\Servidor MC>REM Add custom program arguments {such as nogui} to this file in the next line before the  or

C:\Users\orden\Desktop\Servidor MC>REM  pass them to this script directly

C:\Users\orden\Desktop\Servidor MC>java @user_jvm_args.txt @libraries/net/minecraftforge/forge/1.18.2-40.1.57/win_args.txt
2023-04-01 21:15:43,376 main WARN Advanced terminal features are not available in this environment
[21:15:43] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher running: args [--launchTarget, forgeserver, --fml.forgeVersion, 40.1.57, --fml.mcVersion, 1.18.2, --fml.forgeGroup, net.minecraftforge, --fml.mcpVersion, 20220404.173914, -nogui]
[21:15:43] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher 9.1.3+9.1.3+main.9b69c82a starting: java version 20 by Oracle Corporation
[21:15:43] [main/INFO] [op.OptiFineTransformationService/]: OptiFineTransformationService.onLoad
[21:15:43] [main/INFO] [op.OptiFineTransformationService/]: OptiFine ZIP file URL: union:/C:/Users/orden/Desktop/Servidor%20MC/mods/OptiFine-1.18.2_HD_U_H7.jar%2338!/
[21:15:43] [main/INFO] [op.OptiFineTransformationService/]: OptiFine ZIP file: C:\Users\orden\Desktop\Servidor MC\mods\OptiFine-1.18.2_HD_U_H7.jar
[21:15:43] [main/INFO] [op.OptiFineTransformer/]: Target.PRE_CLASS is available
[21:15:43] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.5 Source=union:/C:/Users/orden/Desktop/Servidor%20MC/libraries/org/spongepowered/mixin/0.8.5/mixin-0.8.5.jar%2314!/ Service=ModLauncher Env=SERVER
[21:15:43] [main/INFO] [op.OptiFineTransformationService/]: OptiFineTransformationService.initialize
[21:15:45] [main/INFO] [op.OptiFineTransformationService/]: OptiFineTransformationService.transformers
[21:15:45] [main/INFO] [op.OptiFineTransformer/]: Targets: 350
[21:15:45] [main/INFO] [op.OptiFineTransformationService/]: additionalClassesLocator: [optifine., net.optifine.]
[21:15:47] [main/INFO] [mixin/]: Compatibility level set to JAVA_17
[21:15:47] [main/INFO] [mixin/]: Successfully loaded Mixin Connector [de.maxhenkel.camera.MixinConnector]
[21:15:47] [main/INFO] [mixin/]: Successfully loaded Mixin Connector [tictim.paraglider.MixinConnector]
[21:15:47] [main/INFO] [cp.mo.mo.LaunchServiceHandler/MODLAUNCHER]: Launching target 'forgeserver' with arguments [-nogui]
[21:15:47] [main/WARN] [mixin/]: Error loading class: net/minecraft/server/level/ChunkMap (java.lang.IllegalArgumentException: Unsupported class file major version 64)
[21:15:47] [main/WARN] [mixin/]: @Mixin target net.minecraft.server.level.ChunkMap was not found securitycraft.mixins.json:camera.ChunkMapMixin
[21:15:47] [main/WARN] [mixin/]: Error loading class: de/maxhenkel/gravestone/events/DeathEvents (java.lang.ClassNotFoundException: de.maxhenkel.gravestone.events.DeathEvents)
[21:15:47] [main/WARN] [mixin/]: Error loading class: net/minecraft/world/item/ItemStack (java.lang.IllegalArgumentException: Unsupported class file major version 64)
[21:15:47] [main/WARN] [mixin/]: @Mixin target net.minecraft.world.item.ItemStack was not found tombstone.mixins.json:ItemStackMixin
[21:15:47] [main/WARN] [mixin/]: Error loading class: java/lang/invoke/MethodHandles$Lookup (java.lang.IllegalArgumentException: Unsupported class file major version 64)
[21:15:47] [main/WARN] [mixin/]: Error loading class: java/lang/invoke/MethodHandles$Lookup (java.lang.IllegalArgumentException: Unsupported class file major version 64)
[21:15:47] [main/WARN] [mixin/]: Error loading class: java/lang/invoke/MethodHandles$Lookup (java.lang.IllegalArgumentException: Unsupported class file major version 64)
[21:15:47] [main/WARN] [mixin/]: Error loading class: java/lang/invoke/MethodHandles$Lookup (java.lang.IllegalArgumentException: Unsupported class file major version 64)
[21:15:47] [main/WARN] [mixin/]: Error loading class: java/lang/invoke/MethodHandles$Lookup (java.lang.IllegalArgumentException: Unsupported class file major version 64)
[21:15:47] [main/WARN] [mixin/]: Error loading class: java/lang/invoke/MethodHandles$Lookup (java.lang.IllegalArgumentException: Unsupported class file major version 64)
[21:15:47] [main/WARN] [mixin/]: Error loading class: java/lang/invoke/MethodHandles$Lookup (java.lang.IllegalArgumentException: Unsupported class file major version 64)
[21:15:47] [main/WARN] [mixin/]: Error loading class: java/lang/invoke/MethodHandles$Lookup (java.lang.IllegalArgumentException: Unsupported class file major version 64)
[21:15:47] [main/WARN] [mixin/]: Error loading class: java/lang/invoke/MethodHandles$Lookup (java.lang.IllegalArgumentException: Unsupported class file major version 64)
[21:15:47] [main/WARN] [mixin/]: Error loading class: java/lang/invoke/MethodHandles$Lookup (java.lang.IllegalArgumentException: Unsupported class file major version 64)
[21:15:47] [main/WARN] [mixin/]: Error loading class: java/lang/invoke/MethodHandles$Lookup (java.lang.IllegalArgumentException: Unsupported class file major version 64)
[21:15:47] [main/WARN] [mixin/]: Error loading class: java/lang/invoke/MethodHandles$Lookup (java.lang.IllegalArgumentException: Unsupported class file major version 64)
[21:15:47] [main/WARN] [mixin/]: Error loading class: java/lang/invoke/MethodHandles$Lookup (java.lang.IllegalArgumentException: Unsupported class file major version 64)
[21:15:47] [main/WARN] [mixin/]: Error loading class: java/util/concurrent/CompletableFuture (java.lang.IllegalArgumentException: Unsupported class file major version 64)
Exception in thread "main" org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: An unexpected critical error was encountered
        at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:392)
        at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClass(MixinTransformer.java:250)
        at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.service.modlauncher.MixinTransformationHandler.processClass(MixinTransformationHandler.java:131)
        at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.MixinLaunchPluginLegacy.processClass(MixinLaunchPluginLegacy.java:131)
        at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.serviceapi.ILaunchPluginService.processClassWithFlags(ILaunchPluginService.java:156)
        at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchPluginHandler.offerClassNodeToPlugins(LaunchPluginHandler.java:88)
        at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.ClassTransformer.transform(ClassTransformer.java:120)
        at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.TransformingClassLoader.maybeTransformClassBytes(TransformingClassLoader.java:50)
        at [email protected]/cpw.mods.cl.ModuleClassLoader.readerToClass(ModuleClassLoader.java:110)
        at [email protected]/cpw.mods.cl.ModuleClassLoader.lambda$findClass$16(ModuleClassLoader.java:216)
        at [email protected]/cpw.mods.cl.ModuleClassLoader.loadFromModule(ModuleClassLoader.java:226)
        at [email protected]/cpw.mods.cl.ModuleClassLoader.findClass(ModuleClassLoader.java:216)
        at [email protected]/cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:132)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
        at java.base/java.lang.Class.getDeclaredMethods0(Native Method)
        at java.base/java.lang.Class.privateGetDeclaredMethods(Class.java:3502)
        at java.base/java.lang.Class.getMethodsRecursive(Class.java:3643)
        at java.base/java.lang.Class.getMethod0(Class.java:3629)
        at java.base/java.lang.Class.getMethod(Class.java:2319)
        at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.targets.CommonServerLaunchHandler.lambda$launchService$0(CommonServerLaunchHandler.java:32)
        at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37)
        at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53)
        at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71)
        at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.Launcher.run(Launcher.java:106)
        at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.Launcher.main(Launcher.java:77)
        at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26)
        at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23)
        at [email protected]/cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:149)
Caused by: org.spongepowered.asm.mixin.throwables.ClassMetadataNotFoundException: java.util.concurrent.CompletableFuture
        at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinPreProcessorStandard.transformMethod(MixinPreProcessorStandard.java:754)
        at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinPreProcessorStandard.transform(MixinPreProcessorStandard.java:739)
        at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinPreProcessorStandard.attach(MixinPreProcessorStandard.java:310)
        at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinPreProcessorStandard.createContextFor(MixinPreProcessorStandard.java:280)
        at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinInfo.createContextFor(MixinInfo.java:1288)
        at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.apply(MixinApplicatorStandard.java:292)
        at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.TargetClassContext.apply(TargetClassContext.java:383)
        at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.TargetClassContext.applyMixins(TargetClassContext.java:365)
        at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:363)
        ... 27 more

C:\Users\orden\Desktop\Servidor MC>pause
Presione una tecla para continuar . . .

Use java 17, mixin does not support java 20

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

Important Information

By using this site, you agree to our Terms of Use.

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.