FTB Unstable 1.21 Linux server fails to start

[lovick]

Modpack

FTB Unstable 1.21

Modpack version

1.2.0

Launcher

Server

Has the pack been modified

No

Log Files

[08:56:03] [main/ERROR] [minecraft/Main]: Failed to start the minecraft server net.neoforged.fml.ModLoadingException: Loading errors encountered:

• Extreme Sound Muffler (extremesoundmuffler) has failed to load correctly java.lang.IllegalArgumentException: class com.leobeliik.extremesoundmuffler.SoundMufflerNeoForge has no @SubscribeEvent methods, but register was called anyway. The event bus only recognizes listener methods that have the @SubscribeEvent annotation.

  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%23353!/:?] {re:classloading}
  at TRANSFORMER/neoforge@21.0.167/net.neoforged.neoforge.server.loading.ServerModLoader.load(ServerModLoader.java:34) ~[neoforge-21.0.167-universal.jar%23353!/:?] {re:classloading}
  at TRANSFORMER/minecraft@1.21/net.minecraft.server.Main.main(Main.java:124) ~[server-1.21-20240613.152323-srg.jar%23352!/:?] {re:classloading}
  at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source) ~[?:?] {}
  at java.base/java.lang.reflect.Method.invoke(Unknown Source) ~[?:?] {}
  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:?] {}

Describe the bug

After installing the server, attempting to start the server leads to a crash. Confirmed with a fresh install as well as an upgrade to an existing install.

Steps to reproduce

1. Install the Linux Server
2. Start the server

Expected behaviour

Started server available to connect to

Screenshots

No response

Additional information

Slightly different error from issue #5750, as this error only popped up after that one was resolved.

[stevenliuxd]

Hey there! I ran into this exact issue. I did some digging and sources state that Extreme Sound Muffler is a client-side mod, so I deleted it from my server mods folder and it has been working for me since. Give that a shot and let me know!

[TheWolfNations]

Can confirm @stevenliuxd diagnosis is correct. Extreme Sound Muffler is a client-side mod, once removed the server starts fine

[Gaz492]

This looks to have been fixed, let us know if you run into any further issues.