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 2026-09-28T01:02:24.004243513Z main WARN Advanced terminal features are not available in this environment [01:02:24] [main/INFO] [ne.ne.fm.st.Entrypoint/]: JVM Uptime at startup: 148ms [01:02:24] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Starting FancyModLoader version 10.0.36 (DEDICATED_SERVER in PROD) [01:02:24] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Game directory: /srv/pack [01:02:24] [main/INFO] [ne.ne.fm.lo.EarlyServiceDiscovery/]: Found 2 early service jars (out of 69) in 17ms [01:02:24] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Loading FML Early Services: [01:02:24] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: - libraries/net/neoforged/fancymodloader/loader/10.0.36/loader-10.0.36.jar [01:02:24] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: - libraries/net/neoforged/fancymodloader/earlydisplay/10.0.36/earlydisplay-10.0.36.jar [01:02:24] [main/INFO] [ne.ne.fm.lo.ImmediateWindowHandler/]: Not loading early display in headless mode. [01:02:24] [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. [01:02:24] [main/INFO] [ne.ne.fm.lo.mo.lo.JarInJarDependencyLocator/]: Found 2 dependencies adding them to mods collection [01:02:24] [main/INFO] [ne.ne.fm.lo.mo.ModDiscoverer/]: Mod List: Name Version (Mod Id) Minecraft 1.21.11 (minecraft) NeoForge 21.11.45 (neoforge) Particle Effects 1.0.2 (particle_effects) [01:02:24] [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 [01:02:24] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Loading FML Plugins: [01:02:24] [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 [01:02:24] [main/INFO] [ne.ne.fm.lo.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)) - particle_effects (jar(mods/particle_effects-1.21.11-NeoForge-1.0.2.jar)) [01:02:24] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Built game content classloader in 70ms [01:02:24] [main/WARN] [mixin/]: Reference map 'particle_effects.refmap.json' for particle_effects.mixins.json could not be read. If this is a development environment you can ignore this message [01:02:25] [main/INFO] [MixinExtras|Service/]: Initializing MixinExtras via com.llamalad7.mixinextras.service.MixinExtrasServiceImpl(version=0.5.3). [01:02:32] [modloading-worker-0/INFO] [ne.ne.ne.co.NeoForgeMod/NEOFORGE-MOD]: NeoForge mod loading, version 21.11.45, for MC 1.21.11 [01:02:33] [modloading-sync-worker/ERROR] [ne.ne.fm.DeferredWorkQueue/]: Mod 'particle_effects' encountered an error in a deferred task: java.lang.ClassCastException: class net.minecraft.world.effect.RegenerationMobEffect cannot be cast to class com.leclowndu93150.particle_effects.utils.PEStatusEffect (net.minecraft.world.effect.RegenerationMobEffect is in module minecraft@1.21.11 of loader 'TRANSFORMER' @37fbe4a8; com.leclowndu93150.particle_effects.utils.PEStatusEffect is in module particle_effects@1.0.2 of loader 'TRANSFORMER' @37fbe4a8) at TRANSFORMER/particle_effects@1.0.2/com.leclowndu93150.particle_effects.utils.StatusEffectUtils.swapParticle(StatusEffectUtils.java:9) ~[particle_effects-1.21.11-NeoForge-1.0.2.jar:?] {} at TRANSFORMER/particle_effects@1.0.2/com.leclowndu93150.particle_effects.manager.ParticleEffectsManager.lambda$onCommonSetup$1(ParticleEffectsManager.java:85) ~[particle_effects-1.21.11-NeoForge-1.0.2.jar:?] {} at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[?:?] {} at net.neoforged.fml.DeferredWorkQueue.lambda$makeRunnable$2(DeferredWorkQueue.java:67) ~[loader-10.0.36.jar:10.0] {} at net.neoforged.fml.DeferredWorkQueue.makeRunnable(DeferredWorkQueue.java:62) ~[loader-10.0.36.jar:10.0] {} at net.neoforged.fml.DeferredWorkQueue.lambda$runTasks$0(DeferredWorkQueue.java:47) ~[loader-10.0.36.jar:10.0] {} at java.base/java.util.concurrent.ConcurrentLinkedDeque.forEach(ConcurrentLinkedDeque.java:1650) ~[?:?] {} at net.neoforged.fml.DeferredWorkQueue.runTasks(DeferredWorkQueue.java:47) ~[loader-10.0.36.jar:10.0] {} at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[?:?] {} at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[?:?] {} at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[?:?] {} at java.base/java.lang.Thread.run(Thread.java:1583) [?:?] {} [01:02:33] [modloading-sync-worker/FATAL] [ne.ne.fm.DeferredWorkQueue/LOADING]: Synchronous work queue completed exceptionally in 4.357 ms, see suppressed exceptions for details: java.lang.RuntimeException: null at net.neoforged.fml.DeferredWorkQueue.runTasks(DeferredWorkQueue.java:45) ~[loader-10.0.36.jar:10.0] {} at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[?:?] {} at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[?:?] {} at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[?:?] {} at java.base/java.lang.Thread.run(Thread.java:1583) [?:?] {} Suppressed: java.lang.ClassCastException: class net.minecraft.world.effect.RegenerationMobEffect cannot be cast to class com.leclowndu93150.particle_effects.utils.PEStatusEffect (net.minecraft.world.effect.RegenerationMobEffect is in module minecraft@1.21.11 of loader 'TRANSFORMER' @37fbe4a8; com.leclowndu93150.particle_effects.utils.PEStatusEffect is in module particle_effects@1.0.2 of loader 'TRANSFORMER' @37fbe4a8) at TRANSFORMER/particle_effects@1.0.2/com.leclowndu93150.particle_effects.utils.StatusEffectUtils.swapParticle(StatusEffectUtils.java:9) ~[particle_effects-1.21.11-NeoForge-1.0.2.jar:?] {} at TRANSFORMER/particle_effects@1.0.2/com.leclowndu93150.particle_effects.manager.ParticleEffectsManager.lambda$onCommonSetup$1(ParticleEffectsManager.java:85) ~[particle_effects-1.21.11-NeoForge-1.0.2.jar:?] {} at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[?:?] {} at net.neoforged.fml.DeferredWorkQueue.lambda$makeRunnable$2(DeferredWorkQueue.java:67) ~[loader-10.0.36.jar:10.0] {} at net.neoforged.fml.DeferredWorkQueue.makeRunnable(DeferredWorkQueue.java:62) ~[loader-10.0.36.jar:10.0] {} at net.neoforged.fml.DeferredWorkQueue.lambda$runTasks$0(DeferredWorkQueue.java:47) ~[loader-10.0.36.jar:10.0] {} at java.base/java.util.concurrent.ConcurrentLinkedDeque.forEach(ConcurrentLinkedDeque.java:1650) ~[?:?] {} at net.neoforged.fml.DeferredWorkQueue.runTasks(DeferredWorkQueue.java:47) ~[loader-10.0.36.jar:10.0] {} at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[?:?] {} at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[?:?] {} at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[?:?] {} at java.base/java.lang.Thread.run(Thread.java:1583) [?:?] {} [01:02:33] [main/FATAL] [ne.ne.fm.ModLoader/LOADING]: Failed to wait for future Common setup: Deferred Queue, 1 errors found [01:02:33] [main/ERROR] [minecraft/CrashReport]: Negative index in crash report handler (0/11) [01:02:33] [main/FATAL] [ne.ne.ne.co.NeoForgeMod/]: Preparing crash report with UUID b23ccf71-0cbd-47df-a26b-5546842854df [01:02:33] [main/FATAL] [ne.ne.ne.se.lo.ServerModLoader/]: Crash report saved to ./crash-reports/crash-2026-09-28_01.02.33-fml.txt [01:02:33] [main/FATAL] [ne.ne.ne.co.NeoForgeMod/]: Preparing crash report with UUID 4bd1f321-3dac-485a-9cea-034bb81b1109 ---- Minecraft Crash Report ---- // Who set us up the TNT? Time: 2026-09-28 01:02:33 Description: Mod loading failures have occurred; consult the issue messages for more details net.neoforged.neoforge.logging.CrashReportExtender$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 TRANSFORMER/particle_effects@1.0.2/com.leclowndu93150.particle_effects.utils.StatusEffectUtils.swapParticle(StatusEffectUtils.java:9) ~[particle_effects-1.21.11-NeoForge-1.0.2.jar:?] {} -- Mod loading issue -- Details: Mod file: Failure message: An uncaught parallel processing error has occurred. java.lang.ClassCastException: class net.minecraft.world.effect.RegenerationMobEffect cannot be cast to class com.leclowndu93150.particle_effects.utils.PEStatusEffect (net.minecraft.world.effect.RegenerationMobEffect is in module minecraft@1.21.11 of loader 'TRANSFORMER' @37fbe4a8; com.leclowndu93150.particle_effects.utils.PEStatusEffect is in module particle_effects@1.0.2 of loader 'TRANSFORMER' @37fbe4a8) Mod version: Mod issues URL: Exception message: java.lang.ClassCastException: class net.minecraft.world.effect.RegenerationMobEffect cannot be cast to class com.leclowndu93150.particle_effects.utils.PEStatusEffect (net.minecraft.world.effect.RegenerationMobEffect is in module minecraft@1.21.11 of loader 'TRANSFORMER' @37fbe4a8; com.leclowndu93150.particle_effects.utils.PEStatusEffect is in module particle_effects@1.0.2 of loader 'TRANSFORMER' @37fbe4a8) Stacktrace: at TRANSFORMER/particle_effects@1.0.2/com.leclowndu93150.particle_effects.utils.StatusEffectUtils.swapParticle(StatusEffectUtils.java:9) ~[particle_effects-1.21.11-NeoForge-1.0.2.jar:?] {} at TRANSFORMER/particle_effects@1.0.2/com.leclowndu93150.particle_effects.manager.ParticleEffectsManager.lambda$onCommonSetup$1(ParticleEffectsManager.java:85) ~[particle_effects-1.21.11-NeoForge-1.0.2.jar:?] {} at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[?:?] {} at net.neoforged.fml.DeferredWorkQueue.lambda$makeRunnable$2(DeferredWorkQueue.java:67) ~[loader-10.0.36.jar:10.0] {} at net.neoforged.fml.DeferredWorkQueue.makeRunnable(DeferredWorkQueue.java:62) ~[loader-10.0.36.jar:10.0] {} at net.neoforged.fml.DeferredWorkQueue.lambda$runTasks$0(DeferredWorkQueue.java:47) ~[loader-10.0.36.jar:10.0] {} at java.base/java.util.concurrent.ConcurrentLinkedDeque.forEach(ConcurrentLinkedDeque.java:1650) ~[?:?] {} at net.neoforged.fml.DeferredWorkQueue.runTasks(DeferredWorkQueue.java:47) ~[loader-10.0.36.jar:10.0] {} at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[?:?] {} at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[?:?] {} at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[?:?] {} at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?] {} -- 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: 110656512 bytes (105 MiB) / 227540992 bytes (217 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): 28165.55 Swap memory total (MiB): 4096.00 Swap memory used (MiB): 2115.45 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: 2269990.00, 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 05.10%: neoforge:access_transformer 00.10%: neoforge:mixin 00.00%: neoforge:simple_processors_default (marker) 00.02%: neoforge.coremods:field_to_getter.net.minecraft.world.level.biome.biome 00.02%: neoforge.coremods:field_to_getter.net.minecraft.world.level.block.flowerpotblock 00.02%: neoforge.coremods:field_to_getter.net.minecraft.world.level.levelgen.structure.structure 00.44%: neoforge.coremods:method_redirector Mod List: 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 particle_effects-1.21.11-NeoForge-1.0.2.jar |Particle Effects |particle_effects |1.0.2 |Manifest: e4fb2cb09321d94067e59266dc9168f87b48dec4d8e0bb13639801b599449938 Crash Report UUID: 4bd1f321-3dac-485a-9cea-034bb81b1109 FML: 10.0.36 NeoForge: 21.11.45 [01:02:33] [main/ERROR] [minecraft/Main]: Failed to start the minecraft server net.neoforged.fml.ModLoadingException: Loading errors encountered: - An uncaught parallel processing error has occurred. java.lang.ClassCastException: class net.minecraft.world.effect.RegenerationMobEffect cannot be cast to class com.leclowndu93150.particle_effects.utils.PEStatusEffect (net.minecraft.world.effect.RegenerationMobEffect is in module minecraft@1.21.11 of loader 'TRANSFORMER' @37fbe4a8; com.leclowndu93150.particle_effects.utils.PEStatusEffect is in module particle_effects@1.0.2 of loader 'TRANSFORMER' @37fbe4a8) at net.neoforged.fml.ModLoader.waitForFuture(ModLoader.java:253) ~[loader-10.0.36.jar:10.0] {} at net.neoforged.fml.ModLoader.waitForTask(ModLoader.java:155) ~[loader-10.0.36.jar:10.0] {} at net.neoforged.fml.ModLoader.runInitTask(ModLoader.java:135) ~[loader-10.0.36.jar:10.0] {} at net.neoforged.fml.ModLoader.dispatchParallelEvent(ModLoader.java:146) ~[loader-10.0.36.jar:10.0] {} at TRANSFORMER/neoforge@21.11.45/net.neoforged.neoforge.internal.CommonModLoader.load(CommonModLoader.java:74) ~[neoforge-21.11.45-universal.jar:?] {} at TRANSFORMER/neoforge@21.11.45/net.neoforged.neoforge.server.loading.ServerModLoader.load(ServerModLoader.java:32) ~[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] {} [01:02:33] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Closing FML Loader 626fc0fe [01:02:33] [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...