[28Sep2026 02:13:22.838] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher running: args [--launchTarget, forgeserver, --fml.neoForgeVersion, 21.0.167, --fml.fmlVersion, 4.0.23, --fml.mcVersion, 1.21, --fml.neoFormVersion, 20240613.152323, nogui] [28Sep2026 02:13:22.841] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: JVM identified as Eclipse Adoptium OpenJDK 64-Bit Server VM 21.0.12.1+1-LTS [28Sep2026 02:13:22.843] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher 11.0.4+main.d2e20e43 starting: java version 21.0.12.1 by Eclipse Adoptium; OS Linux arch amd64 version 5.15.0-1114-realtime [28Sep2026 02:13:23.008] [main/INFO] [net.neoforged.fml.loading.ImmediateWindowHandler/]: ImmediateWindowProvider not loading because launch target is forgeserver [28Sep2026 02:13:23.060] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.6 Source=union:/srv/pack/libraries/net/fabricmc/sponge-mixin/0.14.0+mixin.0.8.6/sponge-mixin-0.14.0+mixin.0.8.6.jar%2375!/ Service=ModLauncher Env=SERVER [28Sep2026 02:13:23.260] [main/INFO] [net.neoforged.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "server-1.21-20240613.152323-srg.jar" [locator: production server provider +net.neoforged:neoforge:21.0.167:server] [28Sep2026 02:13:23.290] [main/INFO] [net.neoforged.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "neoforge-21.0.167-universal.jar" [locator: PathBasedLocator[name=neoforge, paths=[libraries/net/neoforged/neoforge/21.0.167/neoforge-21.0.167-universal.jar]], reader: mod manifest] [28Sep2026 02:13:23.300] [main/INFO] [net.neoforged.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "architectury-13.0.11-neoforge.jar" [locator: {mods folder locator at /srv/pack/mods}, reader: mod manifest] [28Sep2026 02:13:23.305] [main/INFO] [net.neoforged.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "ultreonlib-1.7.0-beta.1.jar" [locator: {mods folder locator at /srv/pack/mods}, reader: mod manifest] [28Sep2026 02:13:23.412] [main/INFO] [net.neoforged.fml.loading.moddiscovery.locators.JarInJarDependencyLocator/]: Found 1 dependencies adding them to mods collection [28Sep2026 02:13:23.412] [main/INFO] [net.neoforged.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found gamelibrary file "mixinextras-neoforge-0.3.5.jar" [parent: neoforge-21.0.167-universal.jar, locator: jarinjar, reader: mod manifest] [28Sep2026 02:13:23.886] [main/INFO] [net.neoforged.fml.loading.FMLServiceProvider/CORE]: Loading coremod script-engine for [neoforge] [28Sep2026 02:13:25.136] [main/INFO] [mixin/]: Compatibility level set to JAVA_17 [28Sep2026 02:13:25.190] [main/INFO] [cpw.mods.modlauncher.LaunchServiceHandler/MODLAUNCHER]: Launching target 'forgeserver' with arguments [nogui] [28Sep2026 02:13:26.974] [main/INFO] [MixinExtras|Service/]: Initializing MixinExtras via com.llamalad7.mixinextras.service.MixinExtrasServiceImpl(version=0.3.5). [28Sep2026 02:13:35.733] [modloading-worker-0/INFO] [net.neoforged.neoforge.common.NeoForgeMod/NEOFORGE-MOD]: NeoForge mod loading, version 21.0.167, for MC 1.21 [28Sep2026 02:13:35.734] [modloading-worker-0/ERROR] [net.neoforged.fml.javafmlmod.FMLModContainer/LOADING]: Failed to create mod instance. ModID: ultreonlib, class dev.ultreon.mods.lib.neoforge.UltreonLibNeoForge java.lang.NoClassDefFoundError: net/minecraft/client/gui/components/WidgetSprites at TRANSFORMER/ultreonlib@1.7.0-beta.1/dev.ultreon.mods.lib.client.theme.Theme.(Theme.java:64) ~[ultreonlib-1.7.0-beta.1.jar%23124!/:1.7.0-beta.1] at TRANSFORMER/ultreonlib@1.7.0-beta.1/dev.ultreon.mods.lib.client.theme.Theme.(Theme.java:28) ~[ultreonlib-1.7.0-beta.1.jar%23124!/:1.7.0-beta.1] at TRANSFORMER/ultreonlib@1.7.0-beta.1/dev.ultreon.mods.lib.client.theme.Theme.(Theme.java:24) ~[ultreonlib-1.7.0-beta.1.jar%23124!/:1.7.0-beta.1] at TRANSFORMER/ultreonlib@1.7.0-beta.1/dev.ultreon.mods.lib.client.theme.Theme.lambda$static$0(Theme.java:17) ~[ultreonlib-1.7.0-beta.1.jar%23124!/:1.7.0-beta.1] at TRANSFORMER/ultreonlib@1.7.0-beta.1/dev.ultreon.mods.lib.client.theme.Theme.register(Theme.java:61) ~[ultreonlib-1.7.0-beta.1.jar%23124!/:1.7.0-beta.1] at TRANSFORMER/ultreonlib@1.7.0-beta.1/dev.ultreon.mods.lib.client.theme.Theme.(Theme.java:17) ~[ultreonlib-1.7.0-beta.1.jar%23124!/:1.7.0-beta.1] at TRANSFORMER/ultreonlib@1.7.0-beta.1/dev.ultreon.mods.lib.client.theme.GlobalTheme.lambda$static$0(GlobalTheme.java:26) ~[ultreonlib-1.7.0-beta.1.jar%23124!/:1.7.0-beta.1] at TRANSFORMER/ultreonlib@1.7.0-beta.1/dev.ultreon.mods.lib.client.theme.GlobalTheme.register(GlobalTheme.java:86) ~[ultreonlib-1.7.0-beta.1.jar%23124!/:1.7.0-beta.1] at TRANSFORMER/ultreonlib@1.7.0-beta.1/dev.ultreon.mods.lib.client.theme.GlobalTheme.(GlobalTheme.java:26) ~[ultreonlib-1.7.0-beta.1.jar%23124!/:1.7.0-beta.1] at TRANSFORMER/ultreonlib@1.7.0-beta.1/dev.ultreon.mods.lib.UltreonLibConfig.(UltreonLibConfig.java:13) ~[ultreonlib-1.7.0-beta.1.jar%23124!/:1.7.0-beta.1] at TRANSFORMER/ultreonlib@1.7.0-beta.1/dev.ultreon.mods.lib.UltreonLib.(UltreonLib.java:72) ~[ultreonlib-1.7.0-beta.1.jar%23124!/:1.7.0-beta.1] at TRANSFORMER/ultreonlib@1.7.0-beta.1/dev.ultreon.mods.lib.UltreonLib.create(UltreonLib.java:120) ~[ultreonlib-1.7.0-beta.1.jar%23124!/:1.7.0-beta.1] at TRANSFORMER/ultreonlib@1.7.0-beta.1/dev.ultreon.mods.lib.neoforge.UltreonLibNeoForge.(UltreonLibNeoForge.java:33) ~[ultreonlib-1.7.0-beta.1.jar%23124!/:1.7.0-beta.1] at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) ~[?:?] at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:502) ~[?:?] at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486) ~[?:?] at MC-BOOTSTRAP/fml_loader@4.0.23/net.neoforged.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:115) ~[loader-4.0.23.jar%2360!/:4.0] at MC-BOOTSTRAP/fml_loader@4.0.23/net.neoforged.fml.ModLoader.lambda$constructMods$3(ModLoader.java:153) ~[loader-4.0.23.jar%2360!/:4.0] at MC-BOOTSTRAP/fml_loader@4.0.23/net.neoforged.fml.ModLoader.lambda$dispatchParallelTask$7(ModLoader.java:231) ~[loader-4.0.23.jar%2360!/:4.0] at java.base/java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:934) [?:?] at java.base/java.util.concurrent.CompletableFuture$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.components.WidgetSprites at cpw.mods.securejarhandler/cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:220) ~[securejarhandler-3.0.8.jar:?] at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526) ~[?:?] ... 27 more [28Sep2026 02:13:35.897] [main/FATAL] [net.neoforged.fml.ModLoader/LOADING]: Failed to wait for future Mod Construction, 1 errors found [28Sep2026 02:13:36.049] [main/FATAL] [net.neoforged.neoforge.common.NeoForgeMod/]: Preparing crash report with UUID 2dceb8f6-bc35-4f90-bfc6-01909ba6ad11 [28Sep2026 02:13:36.049] [main/FATAL] [net.neoforged.neoforge.server.loading.ServerModLoader/]: Crash report saved to ./crash-reports/crash-2026-09-28_02.13.36-fml.txt [28Sep2026 02:13:36.051] [main/FATAL] [net.neoforged.neoforge.common.NeoForgeMod/]: Preparing crash report with UUID 5117355e-6b54-4281-94a7-262d0113c17d [28Sep2026 02:13:36.052] [main/ERROR] [net.minecraft.server.Main/FATAL]: Failed to start the minecraft server net.neoforged.fml.ModLoadingException: Loading errors encountered: - Ultreon Modding Library (ultreonlib) has failed to load correctly java.lang.NoClassDefFoundError: net/minecraft/client/gui/components/WidgetSprites at MC-BOOTSTRAP/fml_loader@4.0.23/net.neoforged.fml.ModLoader.waitForFuture(ModLoader.java:281) ~[loader-4.0.23.jar%2360!/:4.0] at MC-BOOTSTRAP/fml_loader@4.0.23/net.neoforged.fml.ModLoader.dispatchParallelTask(ModLoader.java:244) ~[loader-4.0.23.jar%2360!/:4.0] at MC-BOOTSTRAP/fml_loader@4.0.23/net.neoforged.fml.ModLoader.constructMods(ModLoader.java:152) ~[loader-4.0.23.jar%2360!/:4.0] at MC-BOOTSTRAP/fml_loader@4.0.23/net.neoforged.fml.ModLoader.gatherAndInitializeMods(ModLoader.java:142) ~[loader-4.0.23.jar%2360!/:4.0] at TRANSFORMER/neoforge@21.0.167/net.neoforged.neoforge.internal.CommonModLoader.begin(CommonModLoader.java:49) ~[neoforge-21.0.167-universal.jar%23122!/:?] at TRANSFORMER/neoforge@21.0.167/net.neoforged.neoforge.server.loading.ServerModLoader.load(ServerModLoader.java:34) ~[neoforge-21.0.167-universal.jar%23122!/:?] at TRANSFORMER/minecraft@1.21/net.minecraft.server.Main.main(Main.java:124) ~[server-1.21-20240613.152323-srg.jar%23121!/:?] at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[?:?] at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?] at MC-BOOTSTRAP/fml_loader@4.0.23/net.neoforged.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:136) ~[loader-4.0.23.jar%2360!/:4.0] at MC-BOOTSTRAP/fml_loader@4.0.23/net.neoforged.fml.loading.targets.CommonLaunchHandler.serverService(CommonLaunchHandler.java:128) ~[loader-4.0.23.jar%2360!/:4.0] at MC-BOOTSTRAP/fml_loader@4.0.23/net.neoforged.fml.loading.targets.CommonServerLaunchHandler.runService(CommonServerLaunchHandler.java:32) ~[loader-4.0.23.jar%2360!/:4.0] at MC-BOOTSTRAP/fml_loader@4.0.23/net.neoforged.fml.loading.targets.CommonLaunchHandler.lambda$launchService$4(CommonLaunchHandler.java:118) ~[loader-4.0.23.jar%2360!/:4.0] at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.4/cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) [modlauncher-11.0.4.jar%2362!/:?] at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.4/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) [modlauncher-11.0.4.jar%2362!/:?] at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.4/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) [modlauncher-11.0.4.jar%2362!/:?] at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.4/cpw.mods.modlauncher.Launcher.run(Launcher.java:103) [modlauncher-11.0.4.jar%2362!/:?] at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.4/cpw.mods.modlauncher.Launcher.main(Launcher.java:74) [modlauncher-11.0.4.jar%2362!/:?] at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.4/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) [modlauncher-11.0.4.jar%2362!/:?] at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.4/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) [modlauncher-11.0.4.jar%2362!/:?] at cpw.mods.bootstraplauncher@2.0.2/cpw.mods.bootstraplauncher.BootstrapLauncher.run(BootstrapLauncher.java:210) [bootstraplauncher-2.0.2.jar:?] at cpw.mods.bootstraplauncher@2.0.2/cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:69) [bootstraplauncher-2.0.2.jar:?] 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]