hallo liebe leute kann mir vielleicht jemand helfen ich bin echt verzweifelt.
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Caused by: org.spongepowered.asm.mixin.transformer.throwables.InvalidMixinException: The specified mixin 'com.stereowalker.tiered.mixin.ItemStackMixin' was not found
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at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinInfo.<init>(MixinInfo.java:864)
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at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinConfig.prepareMixins(MixinConfig.java:850)
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at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinConfig.prepare(MixinConfig.java:775)
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at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinProcessor.prepareConfigs(MixinProcessor.java:539)
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... 30 more
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Caused by: java.lang.ClassNotFoundException: The specified mixin 'com.stereowalker.tiered.mixin.ItemStackMixin' was not found
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at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinInfo.loadMixinClass(MixinInfo.java:1313)
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at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinInfo.<init>(MixinInfo.java:857)
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... 33 more
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java.util.ConcurrentModificationException
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at java.base/java.util.HashMap$HashIterator.nextNode(HashMap.java:1597)
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at java.base/java.util.HashMap$ValueIterator.next(HashMap.java:1625)
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at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.LaunchPluginHandler.computeLaunchPluginTransformerSet(LaunchPluginHandler.java:68)
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at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.ClassTransformer.transform(ClassTransformer.java:64)
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at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.TransformingClassLoader.maybeTransformClassBytes(TransformingClassLoader.java:50)
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at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.readerToClass(ModuleClassLoader.java:113)
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at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.lambda$findClass$15(ModuleClassLoader.java:219)
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at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.loadFromModule(ModuleClassLoader.java:229)
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at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.findClass(ModuleClassLoader.java:219)
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at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:135)
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at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
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at TRANSFORMER/modernfix@5.19.1+mc1.20.1/org.embeddedt.modernfix.forge.config.NightConfigWatchThrottler$1.values(NightConfigWatchThrottler.java:37)
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at MC-BOOTSTRAP/com.electronwill.nightconfig.core@3.6.4/com.electronwill.nightconfig.core.file.FileWatcher$WatcherThread.run(FileWatcher.java:162)