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 1.21.10 - 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: 1.21.10 Modloader: NeoForge Modloader version: 21.10.64 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 21.10.64 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-21.10.64-installer.jar 2026-09-27T07:03:23.553261473Z main WARN Advanced terminal features are not available in this environment [07:03:23] [main/INFO] [ne.ne.fm.st.Entrypoint/]: JVM Uptime at startup: 157ms [07:03:23] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Starting FancyModLoader version 10.0.32 (DEDICATED_SERVER in PROD) [07:03:23] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Game directory: /srv/pack [07:03:23] [main/INFO] [ne.ne.fm.lo.EarlyServiceDiscovery/]: Found 2 early service jars (out of 75) in 16ms [07:03:23] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Loading FML Early Services: [07:03:23] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: - libraries/net/neoforged/fancymodloader/earlydisplay/10.0.32/earlydisplay-10.0.32.jar [07:03:23] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: - libraries/net/neoforged/fancymodloader/loader/10.0.32/loader-10.0.32.jar [07:03:23] [main/INFO] [ne.ne.fm.lo.ImmediateWindowHandler/]: Not loading early display in headless mode. [07:03:23] [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. [07:03:23] [main/INFO] [ne.ne.fm.lo.mo.lo.JarInJarDependencyLocator/]: Found 2 dependencies adding them to mods collection [07:03:23] [main/INFO] [ne.ne.fm.lo.mo.ModDiscoverer/]: Mod List: Name Version (Mod Id) Fullbright 1 (fullbright) Minecraft 1.21.10 (minecraft) NeoForge 21.10.64 (neoforge) [07:03:24] [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 [07:03:24] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Loading FML Plugins: [07:03:24] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: - ~libraries/net/neoforged/neoforge/21.10.64/neoforge-21.10.64-universal.jar > net.neoforged.neoforge-coremods-21.10.64.jar [07:03:24] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Building game content classloader: - fullbright (jar(mods/fullbright-1.21.10-neoforge.jar)) - minecraft (jar(~libraries/net/neoforged/minecraft-server-patched/21.10.64/minecraft-server-patched-21.10.64.jar)) - mixinextras.neoforge (jar(~libraries/net/neoforged/neoforge/21.10.64/neoforge-21.10.64-universal.jar > mixinextras-neoforge-0.5.0.jar)) - neoforge (jar(~libraries/net/neoforged/neoforge/21.10.64/neoforge-21.10.64-universal.jar)) - net.neoforged.fml.generated (empty(VirtualJar/net.neoforged.fml.generated)) [07:03:24] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Built game content classloader in 63ms [07:03:25] [main/INFO] [MixinExtras|Service/]: Initializing MixinExtras via com.llamalad7.mixinextras.service.MixinExtrasServiceImpl(version=0.5.0). [07:03:33] [modloading-worker-0/ERROR] [ne.ne.fm.ja.FMLModContainer/LOADING]: Failed to create mod instance. ModID: fullbright, class de.n8M4.fullbright.Fullbright java.lang.NoClassDefFoundError: net/minecraft/client/KeyMapping at TRANSFORMER/fullbright@1/de.n8M4.fullbright.Fullbright.(Fullbright.java:21) ~[?:?] {} at java.base/jdk.internal.misc.Unsafe.ensureClassInitialized0(Native Method) ~[?:?] {} at java.base/jdk.internal.misc.Unsafe.ensureClassInitialized(Unsafe.java:1160) ~[?:?] {} at java.base/jdk.internal.reflect.MethodHandleAccessorFactory.ensureClassInitialized(MethodHandleAccessorFactory.java:301) ~[?:?] {} at java.base/jdk.internal.reflect.MethodHandleAccessorFactory.newConstructorAccessor(MethodHandleAccessorFactory.java:104) ~[?:?] {} at java.base/jdk.internal.reflect.ReflectionFactory.newConstructorAccessor(ReflectionFactory.java:200) ~[?:?] {} at java.base/java.lang.reflect.Constructor.acquireConstructorAccessor(Constructor.java:549) ~[?:?] {} at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?] {} at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486) ~[?:?] {} at net.neoforged.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:118) ~[loader-10.0.32.jar:10.0] {} at net.neoforged.fml.ModLoader.lambda$constructMods$0(ModLoader.java:125) ~[loader-10.0.32.jar:10.0] {} at net.neoforged.fml.ModLoader.lambda$dispatchParallelTask$4(ModLoader.java:203) ~[loader-10.0.32.jar:10.0] {} at java.base/java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:934) [?:?] {} at java.base/java.util.concurrent.CompletableFuture$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.KeyMapping 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-10.0.32.jar:10.0] {} at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526) ~[?:?] {} ... 20 more [07:03:33] [modloading-worker-0/INFO] [ne.ne.ne.co.NeoForgeMod/NEOFORGE-MOD]: NeoForge mod loading, version 21.10.64, for MC 1.21.10 [07:03:33] [main/FATAL] [ne.ne.fm.ModLoader/LOADING]: Failed to wait for future Mod Construction, 1 errors found [07:03:33] [main/ERROR] [minecraft/CrashReport]: Negative index in crash report handler (0/11) [07:03:33] [main/FATAL] [ne.ne.ne.co.NeoForgeMod/]: Preparing crash report with UUID 48bb7a16-659d-43b0-81c9-12d745c1dc98 [07:03:33] [main/FATAL] [ne.ne.ne.se.lo.ServerModLoader/]: Crash report saved to ./crash-reports/crash-2026-09-27_07.03.33-fml.txt [07:03:33] [main/FATAL] [ne.ne.ne.co.NeoForgeMod/]: Preparing crash report with UUID 05cfb3bc-e377-4d08-8f80-6f4e0314db8c ---- Minecraft Crash Report ---- // I'm sorry, Dave. Time: 2026-09-27 07:03:33 Description: Mod loading failures have occurred; consult the issue messages for more details net.neoforged.neoforge.logging.CrashReportExtender$ModLoadingCrashException: Mod loading has failed A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: main Stacktrace: at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445) ~[?:?] {} -- Mod loading issue for: fullbright -- Details: Caused by 0: java.lang.NoClassDefFoundError: net/minecraft/client/KeyMapping at TRANSFORMER/fullbright@1/de.n8M4.fullbright.Fullbright.(Fullbright.java:21) ~[?:?] {} at java.base/jdk.internal.misc.Unsafe.ensureClassInitialized0(Native Method) ~[?:?] {} at java.base/jdk.internal.misc.Unsafe.ensureClassInitialized(Unsafe.java:1160) ~[?:?] {} at java.base/jdk.internal.reflect.MethodHandleAccessorFactory.ensureClassInitialized(MethodHandleAccessorFactory.java:301) ~[?:?] {} at java.base/jdk.internal.reflect.MethodHandleAccessorFactory.newConstructorAccessor(MethodHandleAccessorFactory.java:104) ~[?:?] {} at java.base/jdk.internal.reflect.ReflectionFactory.newConstructorAccessor(ReflectionFactory.java:200) ~[?:?] {} at java.base/java.lang.reflect.Constructor.acquireConstructorAccessor(Constructor.java:549) ~[?:?] {} at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?] {} at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486) ~[?:?] {} at net.neoforged.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:118) ~[loader-10.0.32.jar:10.0] {} at net.neoforged.fml.ModLoader.lambda$constructMods$0(ModLoader.java:125) ~[loader-10.0.32.jar:10.0] {} at net.neoforged.fml.ModLoader.lambda$dispatchParallelTask$4(ModLoader.java:203) ~[loader-10.0.32.jar:10.0] {} at java.base/java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:934) ~[?:?] {} at java.base/java.util.concurrent.CompletableFuture$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/fullbright-1.21.10-neoforge.jar Failure message: Fullbright (fullbright) has failed to load correctly java.lang.NoClassDefFoundError: net/minecraft/client/KeyMapping Mod version: 1 Mod issues URL: Exception message: java.lang.ClassNotFoundException: net.minecraft.client.KeyMapping 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-10.0.32.jar:10.0] {} at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526) ~[?:?] {} at TRANSFORMER/fullbright@1/de.n8M4.fullbright.Fullbright.(Fullbright.java:21) ~[?:?] {} at java.base/jdk.internal.misc.Unsafe.ensureClassInitialized0(Native Method) ~[?:?] {} at java.base/jdk.internal.misc.Unsafe.ensureClassInitialized(Unsafe.java:1160) ~[?:?] {} at java.base/jdk.internal.reflect.MethodHandleAccessorFactory.ensureClassInitialized(MethodHandleAccessorFactory.java:301) ~[?:?] {} at java.base/jdk.internal.reflect.MethodHandleAccessorFactory.newConstructorAccessor(MethodHandleAccessorFactory.java:104) ~[?:?] {} at java.base/jdk.internal.reflect.ReflectionFactory.newConstructorAccessor(ReflectionFactory.java:200) ~[?:?] {} at java.base/java.lang.reflect.Constructor.acquireConstructorAccessor(Constructor.java:549) ~[?:?] {} at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?] {} at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486) ~[?:?] {} at net.neoforged.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:118) ~[loader-10.0.32.jar:10.0] {} at net.neoforged.fml.ModLoader.lambda$constructMods$0(ModLoader.java:125) ~[loader-10.0.32.jar:10.0] {} at net.neoforged.fml.ModLoader.lambda$dispatchParallelTask$4(ModLoader.java:203) ~[loader-10.0.32.jar:10.0] {} at java.base/java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:934) ~[?:?] {} at java.base/java.util.concurrent.CompletableFuture$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: 1.21.10 Minecraft Version ID: 1.21.10 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: 23295728 bytes (22 MiB) / 206569472 bytes (197 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): 26407.23 Swap memory total (MiB): 4096.00 Swap memory used (MiB): 132.73 Space in storage for jna.tmpdir (MiB): Space in storage for org.lwjgl.system.SharedLibraryExtractPath (MiB): Space in storage for io.netty.native.workdir (MiB): Space in storage for java.io.tmpdir (MiB): available: 64358.52, total: 64358.65 Space in storage for workdir (MiB): available: 2492802.25, 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 05.33%: 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 00.33%: neoforge.coremods:method_redirector Mod List: fullbright-1.21.10-neoforge.jar |Fullbright |fullbright |1 |Manifest: 2e4a357caf1f197cd4f30184593facfe62705d743487199e7e87c94fb74d9200 minecraft-server-patched-21.10.64.jar |Minecraft |minecraft |1.21.10 |Manifest: 5afc7a30ff959083a960479bf00753e5005ad1aa409966a7799540a74efeda7e neoforge-21.10.64-universal.jar |NeoForge |neoforge |21.10.64 |Manifest: 51dc4f8418cc0c067df2524bc220edef56097f475f60527d550992bed90a2b57 Crash Report UUID: 05cfb3bc-e377-4d08-8f80-6f4e0314db8c FML: 10.0.32 NeoForge: 21.10.64 [07:03:33] [main/ERROR] [minecraft/Main]: Failed to start the minecraft server net.neoforged.fml.ModLoadingException: Loading errors encountered: - Fullbright (fullbright) has failed to load correctly java.lang.NoClassDefFoundError: net/minecraft/client/KeyMapping at net.neoforged.fml.ModLoader.waitForFuture(ModLoader.java:253) ~[loader-10.0.32.jar:10.0] {} at net.neoforged.fml.ModLoader.dispatchParallelTask(ModLoader.java:216) ~[loader-10.0.32.jar:10.0] {} at net.neoforged.fml.ModLoader.constructMods(ModLoader.java:124) ~[loader-10.0.32.jar:10.0] {} at net.neoforged.fml.ModLoader.gatherAndInitializeMods(ModLoader.java:101) ~[loader-10.0.32.jar:10.0] {} at TRANSFORMER/neoforge@21.10.64/net.neoforged.neoforge.internal.CommonModLoader.begin(CommonModLoader.java:49) ~[neoforge-21.10.64-universal.jar:?] {} at TRANSFORMER/neoforge@21.10.64/net.neoforged.neoforge.server.loading.ServerModLoader.load(ServerModLoader.java:31) ~[neoforge-21.10.64-universal.jar:?] {} at TRANSFORMER/minecraft@1.21.10/net.minecraft.server.Main.main(Main.java:118) [minecraft-server-patched-21.10.64.jar:?] {} at net.neoforged.fml.startup.Server.main(Server.java:19) [loader-10.0.32.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] {} [07:03:33] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Closing FML Loader 3360569f [07:03:33] [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...