[27Sep2026 20:11:04.994] [main/INFO] [net.neoforged.fml.startup.Entrypoint/]: JVM Uptime at startup: 195ms [27Sep2026 20:11:05.008] [main/INFO] [net.neoforged.fml.loading.FMLLoader/]: Starting FancyModLoader version 10.0.36 (DEDICATED_SERVER in PROD) [27Sep2026 20:11:05.009] [main/INFO] [net.neoforged.fml.loading.FMLLoader/]: Game directory: /srv/pack [27Sep2026 20:11:05.071] [main/INFO] [net.neoforged.fml.loading.EarlyServiceDiscovery/]: Found 2 early service jars (out of 69) in 21ms [27Sep2026 20:11:05.072] [main/INFO] [net.neoforged.fml.loading.FMLLoader/]: Loading FML Early Services: [27Sep2026 20:11:05.075] [main/INFO] [net.neoforged.fml.loading.FMLLoader/]: - libraries/net/neoforged/fancymodloader/loader/10.0.36/loader-10.0.36.jar [27Sep2026 20:11:05.085] [main/INFO] [net.neoforged.fml.loading.FMLLoader/]: - libraries/net/neoforged/fancymodloader/earlydisplay/10.0.36/earlydisplay-10.0.36.jar [27Sep2026 20:11:05.101] [main/INFO] [net.neoforged.fml.loading.ImmediateWindowHandler/]: Not loading early display in headless mode. [27Sep2026 20:11:05.122] [main/INFO] [net.neoforged.fml.loading.moddiscovery.locators.GameLocator/]: Failed to find common Minecraft classes and resources on the classpath. Assuming we're launching production. [27Sep2026 20:11:05.367] [main/INFO] [net.neoforged.fml.loading.moddiscovery.locators.JarInJarDependencyLocator/]: Found 2 dependencies adding them to mods collection [27Sep2026 20:11:05.370] [main/INFO] [net.neoforged.fml.loading.moddiscovery.ModDiscoverer/]: Mod List: Name Version (Mod Id) Minecraft 1.21.11 (minecraft) NeoForge 21.11.45 (neoforge) Zetter 0.21.7 (zetter) [27Sep2026 20:11:05.685] [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 [27Sep2026 20:11:05.714] [main/INFO] [net.neoforged.fml.loading.FMLLoader/]: Loading FML Plugins: [27Sep2026 20:11:05.715] [main/INFO] [net.neoforged.fml.loading.FMLLoader/]: - ~libraries/net/neoforged/neoforge/21.11.45/neoforge-21.11.45-universal.jar > net.neoforged.neoforge-coremods-21.11.45.jar [27Sep2026 20:11:05.961] [main/INFO] [net.neoforged.fml.loading.FMLLoader/]: Building game content classloader: - 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)) - zetter (jar(mods/zetter-1.21.1-0.21.7.jar)) [27Sep2026 20:11:05.997] [main/INFO] [net.neoforged.fml.loading.FMLLoader/]: Built game content classloader in 46ms [27Sep2026 20:11:07.307] [main/INFO] [MixinExtras|Service/]: Initializing MixinExtras via com.llamalad7.mixinextras.service.MixinExtrasServiceImpl(version=0.5.3). [27Sep2026 20:11:15.863] [modloading-worker-0/INFO] [net.neoforged.neoforge.common.NeoForgeMod/NEOFORGE-MOD]: NeoForge mod loading, version 21.11.45, for MC 1.21.11 [27Sep2026 20:11:15.891] [modloading-worker-0/ERROR] [net.neoforged.fml.javafmlmod.FMLModContainer/LOADING]: Failed to create mod instance. ModID: zetter, class me.dantaeusb.zetter.Zetter java.lang.NoClassDefFoundError: net/neoforged/neoforge/common/util/INBTSerializable at java.base/java.lang.ClassLoader.defineClass1(Native Method) ~[?:?] at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1027) ~[?:?] at net.neoforged.fml.classloading.ModuleClassLoader.readerToClass(ModuleClassLoader.java:229) ~[loader-10.0.36.jar:10.0] at net.neoforged.fml.classloading.ModuleClassLoader.loadClass(ModuleClassLoader.java:245) ~[loader-10.0.36.jar:10.0] at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526) ~[?:?] at TRANSFORMER/zetter@0.21.7/me.dantaeusb.zetter.Zetter.(Zetter.java:49) ~[zetter-1.21.1-0.21.7.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.neoforged.neoforge.common.util.INBTSerializable at net.neoforged.fml.classloading.ModuleClassLoader.loadClass(ModuleClassLoader.java:254) ~[loader-10.0.36.jar:10.0] at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526) ~[?:?] ... 20 more [27Sep2026 20:11:16.063] [main/FATAL] [net.neoforged.fml.ModLoader/LOADING]: Failed to wait for future Mod Construction, 1 errors found [27Sep2026 20:11:16.201] [main/ERROR] [net.minecraft.CrashReport/]: Negative index in crash report handler (0/11) [27Sep2026 20:11:16.404] [main/FATAL] [net.neoforged.neoforge.common.NeoForgeMod/]: Preparing crash report with UUID 524624d6-7a46-459e-b6e8-cd3664a293cb [27Sep2026 20:11:16.405] [main/FATAL] [net.neoforged.neoforge.server.loading.ServerModLoader/]: Crash report saved to ./crash-reports/crash-2026-09-27_20.11.16-fml.txt [27Sep2026 20:11:16.529] [main/FATAL] [net.neoforged.neoforge.common.NeoForgeMod/]: Preparing crash report with UUID c8b560d2-3763-4e3e-918d-412bf2e19db8 [27Sep2026 20:11:16.530] [main/ERROR] [net.minecraft.server.Main/FATAL]: Failed to start the minecraft server net.neoforged.fml.ModLoadingException: Loading errors encountered: - Zetter (zetter) has failed to load correctly java.lang.NoClassDefFoundError: net/neoforged/neoforge/common/util/INBTSerializable 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] [27Sep2026 20:11:16.533] [main/INFO] [net.neoforged.fml.loading.FMLLoader/]: Closing FML Loader 7e8e0d76 [27Sep2026 20:11:16.533] [main/INFO] [net.neoforged.fml.ModLoader/]: Clearing ModLoader