Start script generated by ServerPackCreator dev. To change the launch settings of this server, such as JVM args / flags, Minecraft version, modloader version etc., edit the variables.txt-file. Detected 1.20.4 - Java 17 Running NeoForge checks and setup... Generating user_jvm_args.txt from variables... Edit JAVA_ARGS in your variables.txt. Do not edit user_jvm_args.txt directly! Manually made changes to user_jvm_args.txt will be lost in the nether! server.jar present. Starting server... Minecraft version: 1.20.4 Modloader: NeoForge Modloader version: 20.4.251 LegacyFabric Installer Version: 1.1.1 Fabric Installer Version: 1.1.2 Quilt Installer Version: 0.15.1 Java Args: Additional Args: -Dlog4j2.formatMsgNoLookups=true SSJ Forge Args: -Djava.security.manager=allow Java Path: /opt/java-17/bin/java Wait For User Input: false Run Command: /opt/java-17/bin/java -Dlog4j2.formatMsgNoLookups=true @user_jvm_args.txt -jar server.jar --installer-force --installer 20.4.251 nogui Java version: openjdk version "17.0.20.1" 2026-08-18 OpenJDK Runtime Environment Temurin-17.0.20.1+1 (build 17.0.20.1+1) OpenJDK 64-Bit Server VM Temurin-17.0.20.1+1 (build 17.0.20.1+1, mixed mode, sharing) [12:45:21.061] [main/INFO] [Launcher/MODLAUNCHER]: ModLauncher running: args [--launchTarget, forgeserver, --fml.neoForgeVersion, 20.4.251, --fml.fmlVersion, 2.0.17, --fml.mcVersion, 1.20.4, --fml.neoFormVersion, 20240627.114801, nogui] [12:45:21.065] [main/INFO] [Launcher/MODLAUNCHER]: ModLauncher 10.0.9+10.0.9+main.dcd20f30 starting: java version 17.0.20.1 by Eclipse Adoptium; OS Linux arch amd64 version 5.15.0-1114-realtime [12:45:21.195] [main/INFO] [loading.ImmediateWindowHandler/]: ImmediateWindowProvider not loading because launch target is forgeserver [12:45:21.242] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.5 Source=union:/srv/pack/libraries/net/fabricmc/sponge-mixin/0.13.4+mixin.0.8.5/sponge-mixin-0.13.4+mixin.0.8.5.jar%2379!/ Service=ModLauncher Env=SERVER [12:45:21.355] [main/INFO] [loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "VanillaIcecreamFix-1.2.1-beta.jar" of type MOD with provider {mods folder locator at /srv/pack/mods} [12:45:21.471] [main/INFO] [loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "server-1.20.4-20240627.114801-srg.jar" of type MOD with provider net.neoforged.fml.loading.moddiscovery.MinecraftLocator@21c64522 [12:45:21.472] [main/INFO] [loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "neoforge-20.4.251-universal.jar" of type MOD with provider net.neoforged.fml.loading.moddiscovery.MinecraftLocator@21c64522 [12:45:21.593] [main/INFO] [loading.moddiscovery.JarInJarDependencyLocator/]: Found 1 dependencies adding them to mods collection [12:45:21.593] [main/INFO] [loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "mixinextras-neoforge-0.4.1.jar" of type GAMELIBRARY with provider net.neoforged.fml.loading.moddiscovery.JarInJarDependencyLocator@5ae76500 [12:45:23.234] [main/INFO] [mixin/]: Compatibility level set to JAVA_17 [12:45:23.247] [main/INFO] [LaunchServiceHandler/MODLAUNCHER]: Launching target 'forgeserver' with arguments [nogui] [12:45:23.319] [main/WARN] [mixin/]: Reference map 'VanillaIcecreamFix-neoforge-refmap.json' for vanillafix.crashui.mixins.json could not be read. If this is a development environment you can ignore this message Exception in thread "main" java.lang.RuntimeException: java.lang.NoClassDefFoundError: me/shedaniel/cloth/clothconfig/shadowed/blue/endless/jankson/api/SyntaxError at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:32) at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.Launcher.run(Launcher.java:108) at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.Launcher.main(Launcher.java:78) at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) at cpw.mods.bootstraplauncher@1.1.2/cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:569) at net.neoforged.serverstarterjar.Main.mainLaunch(Main.java:306) at net.neoforged.serverstarterjar.Main.main(Main.java:76) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:569) at net.neoforged.serverstarterjar.Main8.main(Main8.java:19) Caused by: java.lang.NoClassDefFoundError: me/shedaniel/cloth/clothconfig/shadowed/blue/endless/jankson/api/SyntaxError at TRANSFORMER/vanillafix@1.2.1-beta/org.dimdev.vanillafix.MixinPlugin.shouldApplyMixin(MixinPlugin.java:38) at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.PluginHandle.shouldApplyMixin(PluginHandle.java:132) at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinInfo.shouldApplyMixin(MixinInfo.java:988) at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinInfo.readDeclaredTargets(MixinInfo.java:953) at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinInfo.(MixinInfo.java:882) at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinConfig.prepareMixins(MixinConfig.java:852) at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinConfig.prepare(MixinConfig.java:777) at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinProcessor.prepareConfigs(MixinProcessor.java:540) at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinProcessor.select(MixinProcessor.java:462) at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinProcessor.checkSelect(MixinProcessor.java:438) at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:290) 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/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.serviceapi.ILaunchPluginService.processClassWithFlags(ILaunchPluginService.java:156) at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.LaunchPluginHandler.offerClassNodeToPlugins(LaunchPluginHandler.java:88) at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.ClassTransformer.transform(ClassTransformer.java:120) at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.TransformingClassLoader.maybeTransformClassBytes(TransformingClassLoader.java:50) at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.readerToClass(ModuleClassLoader.java:169) at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.lambda$findClass$20(ModuleClassLoader.java:275) at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.loadFromModule(ModuleClassLoader.java:288) at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.findClass(ModuleClassLoader.java:275) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:637) at java.base/java.lang.Class.forName(Class.java:547) at MC-BOOTSTRAP/fml_loader@2.0.17/net.neoforged.fml.loading.ImmediateWindowHandler$DummyProvider.lambda$updateModuleReads$1(ImmediateWindowHandler.java:163) at java.base/java.util.Optional.map(Optional.java:260) at MC-BOOTSTRAP/fml_loader@2.0.17/net.neoforged.fml.loading.ImmediateWindowHandler$DummyProvider.updateModuleReads(ImmediateWindowHandler.java:163) at MC-BOOTSTRAP/fml_loader@2.0.17/net.neoforged.fml.loading.ImmediateWindowHandler.acceptGameLayer(ImmediateWindowHandler.java:85) at MC-BOOTSTRAP/fml_loader@2.0.17/net.neoforged.fml.loading.FMLLoader.beforeStart(FMLLoader.java:206) at MC-BOOTSTRAP/fml_loader@2.0.17/net.neoforged.fml.loading.targets.CommonLaunchHandler.launchService(CommonLaunchHandler.java:115) at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) ... 18 more Caused by: java.lang.ClassNotFoundException: me.shedaniel.cloth.clothconfig.shadowed.blue.endless.jankson.api.SyntaxError at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525) at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:193) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525) at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:193) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525) ... 49 more Exiting...