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!
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
server.jar present.
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
2026-09-25T07:57:56.686782392Z main WARN Advanced terminal features are not available in this environment
[07:57:56] [main/INFO] [ne.ne.fm.st.Entrypoint/]: JVM Uptime at startup: 118ms
[07:57:56] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Starting FancyModLoader version 10.0.36 (DEDICATED_SERVER in PROD)
[07:57:56] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Game directory: /srv/pack
[07:57:56] [main/INFO] [ne.ne.fm.lo.EarlyServiceDiscovery/]: Found 2 early service jars (out of 69) in 18ms
[07:57:56] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Loading FML Early Services:
[07:57:56] [main/INFO] [ne.ne.fm.lo.FMLLoader/]:  - libraries/net/neoforged/fancymodloader/loader/10.0.36/loader-10.0.36.jar
[07:57:56] [main/INFO] [ne.ne.fm.lo.FMLLoader/]:  - libraries/net/neoforged/fancymodloader/earlydisplay/10.0.36/earlydisplay-10.0.36.jar
[07:57:56] [main/INFO] [ne.ne.fm.lo.ImmediateWindowHandler/]: Not loading early display in headless mode.
[07:57:56] [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.
[07:57:57] [main/INFO] [ne.ne.fm.lo.mo.lo.JarInJarDependencyLocator/]: Found 2 dependencies adding them to mods collection
[07:57:57] [main/INFO] [ne.ne.fm.lo.mo.ModDiscoverer/]: 
     Mod List:
		Name Version (Mod Id)
		Minecraft 1.21.11 (minecraft)
		NeoForge 21.11.45 (neoforge)
		Screenshot Viewer 1.3.6 (screenshot_viewer)
[07:57:57] [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
[07:57:57] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Loading FML Plugins:
[07:57:57] [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
[07:57:57] [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))
 - screenshot_viewer (jar(mods/screenshot_viewer-1.3.6-neoforge-mc1.21.11.jar))
[07:57:57] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Built game content classloader in 16ms
[07:57:57] [main/WARN] [mixin/]: Reference map 'screenshot_viewer.refmap.json' for screenshot_viewer.mixins.json could not be read. If this is a development environment you can ignore this message
[07:57:58] [main/INFO] [MixinExtras|Service/]: Initializing MixinExtras via com.llamalad7.mixinextras.service.MixinExtrasServiceImpl(version=0.5.3).
[07:58:04] [modloading-worker-0/ERROR] [ne.ne.fm.ja.FMLModContainer/LOADING]: Failed to create mod instance. ModID: screenshot_viewer, class io.github.lgatodu47.screenshot_viewer.ScreenshotViewer
java.lang.NoClassDefFoundError: net/minecraft/client/gui/screens/Screen
	at java.base/java.lang.Class.getDeclaredConstructors0(Native Method) ~[?:?] {}
	at java.base/java.lang.Class.privateGetDeclaredConstructors(Class.java:3551) ~[?:?] {}
	at java.base/java.lang.Class.getConstructors(Class.java:2229) ~[?:?] {}
	at net.neoforged.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:85) ~[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.Screen
	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) ~[?:?] {}
	... 14 more
[07:58:04] [modloading-worker-0/INFO] [ne.ne.ne.co.NeoForgeMod/NEOFORGE-MOD]: NeoForge mod loading, version 21.11.45, for MC 1.21.11
[07:58:04] [main/FATAL] [ne.ne.fm.ModLoader/LOADING]: Failed to wait for future Mod Construction, 1 errors found
[07:58:04] [main/ERROR] [minecraft/CrashReport]: Negative index in crash report handler (0/11)
[07:58:04] [main/FATAL] [ne.ne.ne.co.NeoForgeMod/]: Preparing crash report with UUID 257101d0-5e01-41b8-9db2-0dcac3ba9b38
[07:58:04] [main/FATAL] [ne.ne.ne.se.lo.ServerModLoader/]: Crash report saved to ./crash-reports/crash-2026-09-25_07.58.04-fml.txt
[07:58:05] [main/FATAL] [ne.ne.ne.co.NeoForgeMod/]: Preparing crash report with UUID d6ef5c44-206f-4498-9cca-710846708c99
---- Minecraft Crash Report ----
// This is a token for 1 free hug. Redeem at your nearest Mojangsta: [~~HUG~~]
Time: 2026-09-25 07:58:04
Description: Mod loading failures have occurred; consult the issue messages for more details
net.neoforged.neoforge.logging.CrashReportExtender$ModLoadingCrashException: Mod loading has failed
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Thread: main
Stacktrace:
	at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445) ~[?:?] {}
-- Mod loading issue for: screenshot_viewer --
Details:
	Caused by 0: java.lang.NoClassDefFoundError: net/minecraft/client/gui/screens/Screen
		at java.base/java.lang.Class.getDeclaredConstructors0(Native Method) ~[?:?] {}
		at java.base/java.lang.Class.privateGetDeclaredConstructors(Class.java:3551) ~[?:?] {}
		at java.base/java.lang.Class.getConstructors(Class.java:2229) ~[?:?] {}
		at net.neoforged.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:85) ~[loader-10.0.36.jar:10.0] {}
		at net.neoforged.fml.ModLoader.lambda$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/screenshot_viewer-1.3.6-neoforge-mc1.21.11.jar
	Failure message: Screenshot Viewer (screenshot_viewer) has failed to load correctly
		java.lang.NoClassDefFoundError: net/minecraft/client/gui/screens/Screen
	Mod version: 1.3.6
	Mod issues URL: https://github.com/LGatodu47/ScreenshotViewer/issues
	Exception message: java.lang.ClassNotFoundException: net.minecraft.client.gui.screens.Screen
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 java.base/java.lang.Class.getDeclaredConstructors0(Native Method) ~[?:?] {}
	at java.base/java.lang.Class.privateGetDeclaredConstructors(Class.java:3551) ~[?:?] {}
	at java.base/java.lang.Class.getConstructors(Class.java:2229) ~[?:?] {}
	at net.neoforged.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:85) ~[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: 59024768 bytes (56 MiB) / 211812352 bytes (202 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): 26884.69
	Swap memory total (MiB): 4096.00
	Swap memory used (MiB): 133.26
	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: 2543644.00, 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
		05.19%: 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: 
		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
		screenshot_viewer-1.3.6-neoforge-mc1.21.11.jar    |Screenshot Viewer             |screenshot_viewer             |1.3.6               |Manifest: 95d458359547429aaa1ff33eaba724e56025f52dc66f6feba478020c1efa1075
	Crash Report UUID: d6ef5c44-206f-4498-9cca-710846708c99
	FML: 10.0.36
	NeoForge: 21.11.45
[07:58:05] [main/ERROR] [minecraft/Main]: Failed to start the minecraft server
net.neoforged.fml.ModLoadingException: Loading errors encountered:
	- Screenshot Viewer (screenshot_viewer) has failed to load correctly
	  java.lang.NoClassDefFoundError: net/minecraft/client/gui/screens/Screen
	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] {}
[07:58:05] [main/INFO] [ne.ne.fm.lo.FMLLoader/]: Closing FML Loader 61bf3586
[07:58:05] [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...