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 1.21.11 - Java 21
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:              1.21.11
Modloader:                      NeoForge
Modloader version:              21.11.45
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-21/bin/java
Wait For User Input:            false
Run Command:       /opt/java-21/bin/java -Dlog4j2.formatMsgNoLookups=true @user_jvm_args.txt -jar server.jar --installer-force --installer 21.11.45 nogui
Java version:
openjdk version "21.0.12.1" 2026-08-18 LTS
OpenJDK Runtime Environment Temurin-21.0.12.1+1 (build 21.0.12.1+1-LTS)
OpenJDK 64-Bit Server VM Temurin-21.0.12.1+1 (build 21.0.12.1+1-LTS, mixed mode, sharing)
Failed to compute version of installer: neoforge-21.11.45-installer.jar
2026-09-24T15:43:11.128452258Z main WARN Advanced terminal features are not available in this environment
[15:43:11] [main/INFO] [ne.ne.fm.st.Entrypoint/]: JVM Uptime at startup: 161ms
[15:43:11] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Starting FancyModLoader version 10.0.36 (DEDICATED_SERVER in PROD)
[15:43:11] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Game directory: /srv/pack
[15:43:11] [main/INFO] [ne.ne.fm.lo.EarlyServiceDiscovery/]: Found 2 early service jars (out of 69) in 22ms
[15:43:11] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Loading FML Early Services:
[15:43:11] [main/INFO] [ne.ne.fm.lo.FMLLoader/]:  - libraries/net/neoforged/fancymodloader/loader/10.0.36/loader-10.0.36.jar
[15:43:11] [main/INFO] [ne.ne.fm.lo.FMLLoader/]:  - libraries/net/neoforged/fancymodloader/earlydisplay/10.0.36/earlydisplay-10.0.36.jar
[15:43:11] [main/INFO] [ne.ne.fm.lo.ImmediateWindowHandler/]: Not loading early display in headless mode.
[15:43:11] [main/INFO] [ne.ne.fm.lo.mo.lo.GameLocator/]: Failed to find common Minecraft classes and resources on the classpath. Assuming we're launching production.
[15:43:11] [main/INFO] [ne.ne.fm.lo.mo.lo.JarInJarDependencyLocator/]: Found 2 dependencies adding them to mods collection
[15:43:11] [main/INFO] [ne.ne.fm.lo.mo.ModDiscoverer/]: 
     Mod List:
		Name Version (Mod Id)
		IMBlocker 6.2.2 (imblocker)
		Minecraft 1.21.11 (minecraft)
		NeoForge 21.11.45 (neoforge)
[15:43:11] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.7 Source=file:/srv/pack/libraries/net/fabricmc/sponge-mixin/0.16.5+mixin.0.8.7/sponge-mixin-0.16.5+mixin.0.8.7.jar Service=FML Env=SERVER
[15:43:11] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Loading FML Plugins:
[15:43:11] [main/INFO] [ne.ne.fm.lo.FMLLoader/]:  - ~libraries/net/neoforged/neoforge/21.11.45/neoforge-21.11.45-universal.jar > net.neoforged.neoforge-coremods-21.11.45.jar
[15:43:11] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Building game content classloader:
 - imblocker (jar(mods/IMBlocker-6.2.2-neoforge+1.21.9-1.21.11.jar))
 - minecraft (jar(~libraries/net/neoforged/minecraft-server-patched/21.11.45/minecraft-server-patched-21.11.45.jar))
 - mixinextras.neoforge (jar(~libraries/net/neoforged/neoforge/21.11.45/neoforge-21.11.45-universal.jar > mixinextras-neoforge-0.5.3.jar))
 - neoforge (jar(~libraries/net/neoforged/neoforge/21.11.45/neoforge-21.11.45-universal.jar))
 - net.neoforged.fml.generated (empty(VirtualJar/net.neoforged.fml.generated))
[15:43:11] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Built game content classloader in 70ms
[15:43:12] [main/WARN] [mixin/]: Error loading class: net/minecraft/client/gui/screens/inventory/AbstractCommandBlockEditScreen (java.lang.ClassNotFoundException: net.minecraft.client.gui.screens.inventory.AbstractCommandBlockEditScreen)
[15:43:12] [main/WARN] [mixin/]: @Mixin target net.minecraft.client.gui.screens.inventory.AbstractCommandBlockEditScreen was not found imblocker.mixins.json:AbstractCommandBlockScreenMixin from mod imblocker
[15:43:12] [main/WARN] [mixin/]: Error loading class: net/minecraft/client/gui/screens/ChatScreen (java.lang.ClassNotFoundException: net.minecraft.client.gui.screens.ChatScreen)
[15:43:12] [main/WARN] [mixin/]: @Mixin target net.minecraft.client.gui.screens.ChatScreen was not found imblocker.mixins.json:ChatScreenMixin from mod imblocker
[15:43:12] [main/WARN] [mixin/]: Error loading class: net/minecraft/client/gui/components/AbstractWidget (java.lang.ClassNotFoundException: net.minecraft.client.gui.components.AbstractWidget)
[15:43:12] [main/WARN] [mixin/]: @Mixin target net.minecraft.client.gui.components.AbstractWidget was not found imblocker.mixins.json:AbstractWidgetMixin from mod imblocker
[15:43:12] [main/WARN] [mixin/]: Error loading class: net/minecraft/client/Minecraft (java.lang.ClassNotFoundException: net.minecraft.client.Minecraft)
[15:43:12] [main/WARN] [mixin/]: @Mixin target net.minecraft.client.Minecraft was not found imblocker.mixins.json:MinecraftClientMixin from mod imblocker
[15:43:12] [main/WARN] [mixin/]: Error loading class: com/mojang/blaze3d/platform/Window (java.lang.ClassNotFoundException: com.mojang.blaze3d.platform.Window)
[15:43:12] [main/WARN] [mixin/]: @Mixin target com.mojang.blaze3d.platform.Window was not found imblocker.mixins.json:WindowMixin from mod imblocker
[15:43:12] [main/WARN] [mixin/]: Error loading class: net/minecraft/client/renderer/GameRenderer (java.lang.ClassNotFoundException: net.minecraft.client.renderer.GameRenderer)
[15:43:12] [main/WARN] [mixin/]: @Mixin target net.minecraft.client.renderer.GameRenderer was not found imblocker.mixins.json:GameRendererMixin from mod imblocker
[15:43:12] [main/WARN] [mixin/]: Error loading class: net/minecraft/client/KeyboardHandler (java.lang.ClassNotFoundException: net.minecraft.client.KeyboardHandler)
[15:43:12] [main/WARN] [mixin/]: @Mixin target net.minecraft.client.KeyboardHandler was not found imblocker.mixins.json:UnlockIMEKeyListener from mod imblocker
[15:43:12] [main/WARN] [mixin/]: Error loading class: net/minecraft/client/KeyboardHandler (java.lang.ClassNotFoundException: net.minecraft.client.KeyboardHandler)
[15:43:12] [main/WARN] [mixin/]: @Mixin target net.minecraft.client.KeyboardHandler was not found imblocker.mixins.json:KeyboardHandlerAccessor from mod imblocker
[15:43:12] [main/WARN] [mixin/]: Error loading class: net/minecraft/client/gui/components/EditBox (java.lang.ClassNotFoundException: net.minecraft.client.gui.components.EditBox)
[15:43:12] [main/WARN] [mixin/]: @Mixin target net.minecraft.client.gui.components.EditBox was not found imblocker.mixins.json:TextFieldMixin from mod imblocker
[15:43:12] [main/WARN] [mixin/]: Error loading class: net/minecraft/client/gui/components/AbstractScrollArea (java.lang.ClassNotFoundException: net.minecraft.client.gui.components.AbstractScrollArea)
[15:43:12] [main/WARN] [mixin/]: @Mixin target net.minecraft.client.gui.components.AbstractScrollArea was not found imblocker.mixins.json:AbstractScrollAreaMixin from mod imblocker
[15:43:12] [main/WARN] [mixin/]: Error loading class: net/minecraft/client/gui/components/MultilineTextField$StringView (java.lang.ClassNotFoundException: net.minecraft.client.gui.components.MultilineTextField$StringView)
[15:43:12] [main/WARN] [mixin/]: @Mixin target net.minecraft.client.gui.components.MultilineTextField$StringView was not found imblocker.mixins.json:StringViewAccessor from mod imblocker
[15:43:12] [main/WARN] [mixin/]: Error loading class: net/minecraft/client/gui/components/MultilineTextField (java.lang.ClassNotFoundException: net.minecraft.client.gui.components.MultilineTextField)
[15:43:12] [main/WARN] [mixin/]: @Mixin target net.minecraft.client.gui.components.MultilineTextField was not found imblocker.mixins.json:MultilineTextFieldMixin from mod imblocker
[15:43:12] [main/WARN] [mixin/]: Error loading class: net/minecraft/client/gui/components/MultiLineEditBox (java.lang.ClassNotFoundException: net.minecraft.client.gui.components.MultiLineEditBox)
[15:43:12] [main/WARN] [mixin/]: @Mixin target net.minecraft.client.gui.components.MultiLineEditBox was not found imblocker.mixins.json:MultiLineEditBoxMixin from mod imblocker
[15:43:12] [main/WARN] [mixin/]: Error loading class: net/minecraft/client/KeyboardHandler (java.lang.ClassNotFoundException: net.minecraft.client.KeyboardHandler)
[15:43:12] [main/WARN] [mixin/]: @Mixin target net.minecraft.client.KeyboardHandler was not found imblocker.mixins.json:LinuxKeyboardPatch from mod imblocker
[15:43:13] [main/INFO] [MixinExtras|Service/]: Initializing MixinExtras via com.llamalad7.mixinextras.service.MixinExtrasServiceImpl(version=0.5.3).
[15:43:19] [modloading-worker-0/ERROR] [ne.ne.fm.ja.FMLModContainer/LOADING]: Failed to create mod instance. ModID: imblocker, class io.github.reserveword.imblocker.IMBlocker
java.lang.NoClassDefFoundError: net/minecraft/client/gui/screens/inventory/AbstractSignEditScreen
	at TRANSFORMER/imblocker@6.2.2/io.github.reserveword.imblocker.common.IMBlockerConfig.<clinit>(IMBlockerConfig.java:18) ~[IMBlocker-6.2.2-neoforge+1.21.9-1.21.11.jar:?] {}
	at TRANSFORMER/imblocker@6.2.2/io.github.reserveword.imblocker.IMBlocker.<init>(IMBlocker.java:32) ~[IMBlocker-6.2.2-neoforge+1.21.9-1.21.11.jar:?] {}
	at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) ~[?:?] {}
	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:502) ~[?:?] {}
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486) ~[?:?] {}
	at net.neoforged.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:118) ~[loader-10.0.36.jar:10.0] {}
	at net.neoforged.fml.ModLoader.lambda$constructMods$0(ModLoader.java:125) ~[loader-10.0.36.jar:10.0] {}
	at net.neoforged.fml.ModLoader.lambda$dispatchParallelTask$4(ModLoader.java:203) ~[loader-10.0.36.jar:10.0] {}
	at java.base/java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:934) [?:?] {}
	at java.base/java.util.concurrent.CompletableFuture$UniHandle.tryFire(CompletableFuture.java:911) [?:?] {}
	at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:483) [?:?] {}
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387) [?:?] {}
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312) [?:?] {}
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843) [?:?] {}
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808) [?:?] {}
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188) [?:?] {}
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.gui.screens.inventory.AbstractSignEditScreen
	at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445) ~[?:?] {}
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:593) ~[?:?] {}
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526) ~[?:?] {}
	at net.neoforged.fml.classloading.ModuleClassLoader.loadClass(ModuleClassLoader.java:247) ~[loader-10.0.36.jar:10.0] {}
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526) ~[?:?] {}
	... 16 more
2026-09-24T15:43:19.909172953Z modloading-worker-0 ERROR An exception occurred processing Appender File
org.apache.logging.log4j.core.appender.AppenderLoggingException: java.lang.NoClassDefFoundError: Could not initialize class io.github.reserveword.imblocker.common.IMBlockerConfig
	at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:164)
	at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:133)
	at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:124)
	at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:88)
	at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:711)
	at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:669)
	at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:645)
	at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:589)
	at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:92)
	at org.apache.logging.log4j.core.Logger.log(Logger.java:187)
	at org.apache.logging.log4j.spi.AbstractLogger.tryLogMessage(AbstractLogger.java:2970)
	at org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2922)
	at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2904)
	at org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:2697)
	at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:2449)
	at org.apache.logging.log4j.spi.AbstractLogger.error(AbstractLogger.java:895)
	at net.neoforged.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:123)
	at net.neoforged.fml.ModLoader.lambda$constructMods$0(ModLoader.java:125)
	at net.neoforged.fml.ModLoader.lambda$dispatchParallelTask$4(ModLoader.java:203)
	at java.base/java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:934)
	at java.base/java.util.concurrent.CompletableFuture$UniHandle.tryFire(CompletableFuture.java:911)
	at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:483)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188)
Caused by: java.lang.NoClassDefFoundError: Could not initialize class io.github.reserveword.imblocker.common.IMBlockerConfig
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Class.java:536)
	at java.base/java.lang.Class.forName(Class.java:515)
	at org.apache.logging.log4j.util.LoaderUtil.loadClass(LoaderUtil.java:212)
	at org.apache.logging.log4j.core.pattern.ThrowableExtendedStackTraceRenderer.lambda$static$1(ThrowableExtendedStackTraceRenderer.java:196)
	at org.apache.logging.log4j.core.pattern.ThrowableExtendedStackTraceRenderer$ExtendedContext.loadClass(ThrowableExtendedStackTraceRenderer.java:180)
	at org.apache.logging.log4j.core.pattern.ThrowableExtendedStackTraceRenderer$ExtendedContext.createClassResourceInfoByName(ThrowableExtendedStackTraceRenderer.java:166)
	at org.apache.logging.log4j.core.pattern.ThrowableExtendedStackTraceRenderer$ExtendedContext.ofThrowable(ThrowableExtendedStackTraceRenderer.java:96)
	at org.apache.logging.log4j.core.pattern.ThrowableExtendedStackTraceRenderer$ExtendedContext.access$000(ThrowableExtendedStackTraceRenderer.java:81)
	at org.apache.logging.log4j.core.pattern.ThrowableExtendedStackTraceRenderer.createContext(ThrowableExtendedStackTraceRenderer.java:43)
	at org.apache.logging.log4j.core.pattern.ThrowableExtendedStackTraceRenderer.createContext(ThrowableExtendedStackTraceRenderer.java:34)
	at org.apache.logging.log4j.core.pattern.ThrowableStackTraceRenderer.renderThrowable(ThrowableStackTraceRenderer.java:55)
	at org.apache.logging.log4j.core.pattern.ThrowablePatternConverter.format(ThrowablePatternConverter.java:130)
	at org.apache.logging.log4j.core.layout.PatternLayout$NoFormatPatternSerializer.toSerializable(PatternLayout.java:354)
	at org.apache.logging.log4j.core.layout.PatternLayout.toText(PatternLayout.java:251)
	at org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:237)
	at org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:57)
	at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.directEncodeEvent(AbstractOutputStreamAppender.java:227)
	at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.tryAppend(AbstractOutputStreamAppender.java:220)
	at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:211)
	at org.apache.logging.log4j.core.appender.RollingRandomAccessFileAppender.append(RollingRandomAccessFileAppender.java:275)
	at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:160)
	... 26 more
Caused by: java.lang.ExceptionInInitializerError: Exception java.lang.NoClassDefFoundError: net/minecraft/client/gui/screens/inventory/AbstractSignEditScreen [in thread "modloading-worker-0"]
	at TRANSFORMER/imblocker@6.2.2/io.github.reserveword.imblocker.common.IMBlockerConfig.<clinit>(IMBlockerConfig.java:18)
	at TRANSFORMER/imblocker@6.2.2/io.github.reserveword.imblocker.IMBlocker.<init>(IMBlocker.java:32)
	at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62)
	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:502)
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486)
	at net.neoforged.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:118)
	... 10 more
2026-09-24T15:43:19.910649697Z modloading-worker-0 ERROR An exception occurred processing Appender DebugFile
org.apache.logging.log4j.core.appender.AppenderLoggingException: java.lang.NoClassDefFoundError: Could not initialize class io.github.reserveword.imblocker.common.IMBlockerConfig
	at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:164)
	at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:133)
	at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:124)
	at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:88)
	at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:711)
	at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:669)
	at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:645)
	at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:589)
	at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:92)
	at org.apache.logging.log4j.core.Logger.log(Logger.java:187)
	at org.apache.logging.log4j.spi.AbstractLogger.tryLogMessage(AbstractLogger.java:2970)
	at org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2922)
	at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2904)
	at org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:2697)
	at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:2449)
	at org.apache.logging.log4j.spi.AbstractLogger.error(AbstractLogger.java:895)
	at net.neoforged.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:123)
	at net.neoforged.fml.ModLoader.lambda$constructMods$0(ModLoader.java:125)
	at net.neoforged.fml.ModLoader.lambda$dispatchParallelTask$4(ModLoader.java:203)
	at java.base/java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:934)
	at java.base/java.util.concurrent.CompletableFuture$UniHandle.tryFire(CompletableFuture.java:911)
	at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:483)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188)
Caused by: java.lang.NoClassDefFoundError: Could not initialize class io.github.reserveword.imblocker.common.IMBlockerConfig
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Class.java:536)
	at java.base/java.lang.Class.forName(Class.java:515)
	at org.apache.logging.log4j.util.LoaderUtil.loadClass(LoaderUtil.java:212)
	at org.apache.logging.log4j.core.pattern.ThrowableExtendedStackTraceRenderer.lambda$static$1(ThrowableExtendedStackTraceRenderer.java:196)
	at org.apache.logging.log4j.core.pattern.ThrowableExtendedStackTraceRenderer$ExtendedContext.loadClass(ThrowableExtendedStackTraceRenderer.java:180)
	at org.apache.logging.log4j.core.pattern.ThrowableExtendedStackTraceRenderer$ExtendedContext.createClassResourceInfoByName(ThrowableExtendedStackTraceRenderer.java:166)
	at org.apache.logging.log4j.core.pattern.ThrowableExtendedStackTraceRenderer$ExtendedContext.ofThrowable(ThrowableExtendedStackTraceRenderer.java:96)
	at org.apache.logging.log4j.core.pattern.ThrowableExtendedStackTraceRenderer$ExtendedContext.access$000(ThrowableExtendedStackTraceRenderer.java:81)
	at org.apache.logging.log4j.core.pattern.ThrowableExtendedStackTraceRenderer.createContext(ThrowableExtendedStackTraceRenderer.java:43)
	at org.apache.logging.log4j.core.pattern.ThrowableExtendedStackTraceRenderer.createContext(ThrowableExtendedStackTraceRenderer.java:34)
	at org.apache.logging.log4j.core.pattern.ThrowableStackTraceRenderer.renderThrowable(ThrowableStackTraceRenderer.java:55)
	at org.apache.logging.log4j.core.pattern.ThrowablePatternConverter.format(ThrowablePatternConverter.java:130)
	at org.apache.logging.log4j.core.layout.PatternLayout$NoFormatPatternSerializer.toSerializable(PatternLayout.java:354)
	at org.apache.logging.log4j.core.layout.PatternLayout.toText(PatternLayout.java:251)
	at org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:237)
	at org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:57)
	at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.directEncodeEvent(AbstractOutputStreamAppender.java:227)
	at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.tryAppend(AbstractOutputStreamAppender.java:220)
	at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:211)
	at org.apache.logging.log4j.core.appender.RollingRandomAccessFileAppender.append(RollingRandomAccessFileAppender.java:275)
	at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:160)
	... 26 more
Caused by: java.lang.ExceptionInInitializerError: Exception java.lang.NoClassDefFoundError: net/minecraft/client/gui/screens/inventory/AbstractSignEditScreen [in thread "modloading-worker-0"]
	at TRANSFORMER/imblocker@6.2.2/io.github.reserveword.imblocker.common.IMBlockerConfig.<clinit>(IMBlockerConfig.java:18)
	at TRANSFORMER/imblocker@6.2.2/io.github.reserveword.imblocker.IMBlocker.<init>(IMBlocker.java:32)
	at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62)
	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:502)
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486)
	at net.neoforged.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:118)
	... 10 more
[15:43:19] [modloading-worker-0/INFO] [ne.ne.ne.co.NeoForgeMod/NEOFORGE-MOD]: NeoForge mod loading, version 21.11.45, for MC 1.21.11
[15:43:20] [main/FATAL] [ne.ne.fm.ModLoader/LOADING]: Failed to wait for future Mod Construction, 1 errors found
[15:43:20] [main/ERROR] [minecraft/CrashReport]: Negative index in crash report handler (0/11)
[15:43:20] [main/FATAL] [ne.ne.ne.co.NeoForgeMod/]: Preparing crash report with UUID 638c395e-6f5e-4138-bfa8-c96591186b53
[15:43:20] [main/FATAL] [ne.ne.ne.se.lo.ServerModLoader/]: Crash report saved to ./crash-reports/crash-2026-09-24_15.43.20-fml.txt
[15:43:20] [main/FATAL] [ne.ne.ne.co.NeoForgeMod/]: Preparing crash report with UUID ed997b20-20c4-4d76-8577-c127c0bb40c4
---- Minecraft Crash Report ----
// Would you like a cupcake?
Time: 2026-09-24 15:43:20
Description: Mod loading failures have occurred; consult the issue messages for more details
net.neoforged.neoforge.logging.CrashReportExtender$ModLoadingCrashException: Mod loading has failed
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Thread: main
Stacktrace:
	at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445) ~[?:?] {}
-- Mod loading issue for: imblocker --
Details:
	Caused by 0: java.lang.NoClassDefFoundError: net/minecraft/client/gui/screens/inventory/AbstractSignEditScreen
		at TRANSFORMER/imblocker@6.2.2/io.github.reserveword.imblocker.common.IMBlockerConfig.<clinit>(IMBlockerConfig.java:18) ~[IMBlocker-6.2.2-neoforge+1.21.9-1.21.11.jar:?] {}
		at TRANSFORMER/imblocker@6.2.2/io.github.reserveword.imblocker.IMBlocker.<init>(IMBlocker.java:32) ~[IMBlocker-6.2.2-neoforge+1.21.9-1.21.11.jar:?] {}
		at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) ~[?:?] {}
		at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:502) ~[?:?] {}
		at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486) ~[?:?] {}
		at net.neoforged.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:118) ~[loader-10.0.36.jar:10.0] {}
		at net.neoforged.fml.ModLoader.lambda$constructMods$0(ModLoader.java:125) ~[loader-10.0.36.jar:10.0] {}
		at net.neoforged.fml.ModLoader.lambda$dispatchParallelTask$4(ModLoader.java:203) ~[loader-10.0.36.jar:10.0] {}
		at java.base/java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:934) ~[?:?] {}
		at java.base/java.util.concurrent.CompletableFuture$UniHandle.tryFire(CompletableFuture.java:911) ~[?:?] {}
		at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:483) ~[?:?] {}
		at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387) ~[?:?] {}
		at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312) ~[?:?] {}
		at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843) ~[?:?] {}
		at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808) ~[?:?] {}
		at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188) ~[?:?] {}
	Mod file: /srv/pack/mods/IMBlocker-6.2.2-neoforge+1.21.9-1.21.11.jar
	Failure message: IMBlocker (imblocker) has failed to load correctly
		java.lang.NoClassDefFoundError: net/minecraft/client/gui/screens/inventory/AbstractSignEditScreen
	Mod version: 6.2.2
	Mod issues URL: https://github.com/reserveword/IMBlocker/issues
	Exception message: java.lang.ClassNotFoundException: net.minecraft.client.gui.screens.inventory.AbstractSignEditScreen
Stacktrace:
	at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445) ~[?:?] {}
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:593) ~[?:?] {}
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526) ~[?:?] {}
	at net.neoforged.fml.classloading.ModuleClassLoader.loadClass(ModuleClassLoader.java:247) ~[loader-10.0.36.jar:10.0] {}
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526) ~[?:?] {}
	at TRANSFORMER/imblocker@6.2.2/io.github.reserveword.imblocker.common.IMBlockerConfig.<clinit>(IMBlockerConfig.java:18) ~[IMBlocker-6.2.2-neoforge+1.21.9-1.21.11.jar:?] {}
	at TRANSFORMER/imblocker@6.2.2/io.github.reserveword.imblocker.IMBlocker.<init>(IMBlocker.java:32) ~[IMBlocker-6.2.2-neoforge+1.21.9-1.21.11.jar:?] {}
	at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) ~[?:?] {}
	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:502) ~[?:?] {}
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486) ~[?:?] {}
	at net.neoforged.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:118) ~[loader-10.0.36.jar:10.0] {}
	at net.neoforged.fml.ModLoader.lambda$constructMods$0(ModLoader.java:125) ~[loader-10.0.36.jar:10.0] {}
	at net.neoforged.fml.ModLoader.lambda$dispatchParallelTask$4(ModLoader.java:203) ~[loader-10.0.36.jar:10.0] {}
	at java.base/java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:934) ~[?:?] {}
	at java.base/java.util.concurrent.CompletableFuture$UniHandle.tryFire(CompletableFuture.java:911) ~[?:?] {}
	at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:483) ~[?:?] {}
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387) ~[?:?] {}
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312) ~[?:?] {}
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843) ~[?:?] {}
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808) ~[?:?] {}
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188) ~[?:?] {}
-- System Details --
Details:
	Minecraft Version: 1.21.11
	Minecraft Version ID: 1.21.11
	Operating System: Linux (amd64) version 5.15.0-1114-realtime
	Java Version: 21.0.12.1, Eclipse Adoptium
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode, sharing), Eclipse Adoptium
	Memory: 34697656 bytes (33 MiB) / 222298112 bytes (212 MiB) up to 805306368 bytes (768 MiB)
	CPUs: 2
	Processor Vendor: GenuineIntel
	Processor Name: Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz
	Identifier: Intel64 Family 6 Model 158 Stepping 12
	Microarchitecture: Coffee Lake
	Frequency (GHz): 3.60
	Number of physical packages: 1
	Number of physical CPUs: 8
	Number of logical CPUs: 16
	Graphics card #0 name: unknown
	Graphics card #0 vendor: unknown
	Graphics card #0 VRAM (MiB): 0.00
	Graphics card #0 deviceId: unknown
	Graphics card #0 versionInfo: unknown
	Virtual memory max (MiB): 68454.64
	Virtual memory used (MiB): 28470.93
	Swap memory total (MiB): 4096.00
	Swap memory used (MiB): 131.76
	Space in storage for jna.tmpdir (MiB): <path not set>
	Space in storage for org.lwjgl.system.SharedLibraryExtractPath (MiB): <path not set>
	Space in storage for io.netty.native.workdir (MiB): <path not set>
	Space in storage for java.io.tmpdir (MiB): available: 64358.52, total: 64358.65
	Space in storage for workdir (MiB): available: 2558990.00, total: 7564391.00
	JVM Flags: 0 total; 
	Debug Flags: 0 total; 
	Class Processors: 
		00.00%: neoforge:computing_frames (marker)
		00.00%: neoforge:runtime_enum_extender
		05.15%: neoforge:access_transformer
		00.10%: neoforge:mixin
		00.00%: neoforge:simple_processors_default (marker)
		00.03%: neoforge.coremods:field_to_getter.net.minecraft.world.level.biome.biome
		00.03%: neoforge.coremods:field_to_getter.net.minecraft.world.level.block.flowerpotblock
		00.03%: neoforge.coremods:field_to_getter.net.minecraft.world.level.levelgen.structure.structure
		00.43%: neoforge.coremods:method_redirector
	Mod List: 
		IMBlocker-6.2.2-neoforge+1.21.9-1.21.11.jar       |IMBlocker                     |imblocker                     |6.2.2               |Manifest: 869ccae1f0f9c7a2f2874314fc6a06b99d6252cea69bd37567977eaebe7c4f81
		minecraft-server-patched-21.11.45.jar             |Minecraft                     |minecraft                     |1.21.11             |Manifest: 4b7c69bdb9408fdaf4f83130999daeedc19acf99ae158b318b9519ad9e04776e
		neoforge-21.11.45-universal.jar                   |NeoForge                      |neoforge                      |21.11.45            |Manifest: 0d9ab82c37319ed6514e8e28e5ab357ba5e9b8043ee4621333cf45b743039cba
	Crash Report UUID: ed997b20-20c4-4d76-8577-c127c0bb40c4
	FML: 10.0.36
	NeoForge: 21.11.45
[15:43:20] [main/ERROR] [minecraft/Main]: Failed to start the minecraft server
net.neoforged.fml.ModLoadingException: Loading errors encountered:
	- IMBlocker (imblocker) has failed to load correctly
	  java.lang.NoClassDefFoundError: net/minecraft/client/gui/screens/inventory/AbstractSignEditScreen
	at net.neoforged.fml.ModLoader.waitForFuture(ModLoader.java:253) ~[loader-10.0.36.jar:10.0] {}
	at net.neoforged.fml.ModLoader.dispatchParallelTask(ModLoader.java:216) ~[loader-10.0.36.jar:10.0] {}
	at net.neoforged.fml.ModLoader.constructMods(ModLoader.java:124) ~[loader-10.0.36.jar:10.0] {}
	at net.neoforged.fml.ModLoader.gatherAndInitializeMods(ModLoader.java:101) ~[loader-10.0.36.jar:10.0] {}
	at TRANSFORMER/neoforge@21.11.45/net.neoforged.neoforge.internal.CommonModLoader.begin(CommonModLoader.java:49) ~[neoforge-21.11.45-universal.jar:?] {}
	at TRANSFORMER/neoforge@21.11.45/net.neoforged.neoforge.server.loading.ServerModLoader.load(ServerModLoader.java:31) ~[neoforge-21.11.45-universal.jar:?] {}
	at TRANSFORMER/minecraft@1.21.11/net.minecraft.server.Main.main(Main.java:116) [minecraft-server-patched-21.11.45.jar:?] {}
	at net.neoforged.fml.startup.Server.main(Server.java:19) [loader-10.0.36.jar:10.0] {}
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[?:?] {}
	at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?] {}
	at net.neoforged.serverstarterjar.Main.mainLaunch(Main.java:306) [server.jar:0.1.35] {}
	at net.neoforged.serverstarterjar.Main.main(Main.java:76) [server.jar:0.1.35] {}
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[?:?] {}
	at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?] {}
	at net.neoforged.serverstarterjar.Main8.main(Main8.java:19) [server.jar:0.1.35] {}
[15:43:20] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Closing FML Loader 4f3a622b
[15:43:20] [main/INFO] [ne.ne.fm.ModLoader/]: Clearing ModLoader
net.neoforged.fml.startup.FatalStartupException: Couldn't find Minecraft server thread. Startup likely failed.
	at net.neoforged.fml.startup.Server.main(Server.java:23)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at net.neoforged.serverstarterjar.Main.mainLaunch(Main.java:306)
	at net.neoforged.serverstarterjar.Main.main(Main.java:76)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at net.neoforged.serverstarterjar.Main8.main(Main8.java:19)
Exiting...