service-io 3.0.0-pre11 fails to load: NoClassDefFoundError: MiniMessageTranslationStore

[XChen446]

Describe the bug

The server fails to load service-io during startup with a NoClassDefFoundError. The missing class is:

net.kyori.adventure.text.minimessage.translation.MiniMessageTranslationStore

The error occurs during plugin initialization (ServicePlugin.<init>), when building ComponentBundleImpl, because the adventure MiniMessage translation store class cannot be found.

To Reproduce

1. Use youer-1.21.1-bfb3941d server
2. Place service-io-3.0.0-pre11-all.jar into the plugins folder
3. Start the server
4. Observe the console error – the plugin fails to load

Expected behaviour

The server should load the service-io plugin normally, without any ClassNotFoundException or NoClassDefFoundError, and the plugin should initialise successfully.

Error log (if applicable)

https://mclo.gs/tt5fk4h

Key stacktrace:

java.lang.reflect.InvocationTargetException: null
    ...
Caused by: java.lang.NoClassDefFoundError: net/kyori/adventure/text/minimessage/translation/MiniMessageTranslationStore
    at net.thenextlvl.i18n.ComponentBundleImpl$Builder.build(ComponentBundleImpl.java:256)
    at net.thenextlvl.service.plugin.ServicePlugin.<init>(ServicePlugin.java:44)
    ...
Caused by: java.lang.ClassNotFoundException: net.kyori.adventure.text.minimessage.translation.MiniMessageTranslationStore
    at io.papermc.paper.plugin.entrypoint.classloader.PaperPluginClassLoader.loadClass(...)

Full stacktrace

[2026-06-20 23:44:33] [Server thread/ERROR]: Could not load plugin 'service-io-3.0.0-pre11-all.jar'
java.lang.reflect.InvocationTargetException: null
    at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:74)
    at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483)
    at TRANSFORMER/neoforge@21.1.233/io.papermc.paper.plugin.provider.util.ProviderUtil.loadClass(ProviderUtil.java:59)
    ...
Caused by: java.lang.NoClassDefFoundError: net/kyori/adventure/text/minimessage/translation/MiniMessageTranslationStore
    at service-io-3.0.0-pre11-all.jar/net.thenextlvl.i18n.ComponentBundleImpl$Builder.build(ComponentBundleImpl.java:256)
    at service-io-3.0.0-pre11-all.jar/net.thenextlvl.service.plugin.ServicePlugin.<init>(ServicePlugin.java:44)
    ...
Caused by: java.lang.ClassNotFoundException: net.kyori.adventure.text.minimessage.translation.MiniMessageTranslationStore
    at TRANSFORMER/neoforge@21.1.233/io.papermc.paper.plugin.entrypoint.classloader.PaperPluginClassLoader.loadClass(PaperPluginClassLoader.java:145)
    ...

Installed plugins

[00:16:08 INFO]: Server Plugins (35):
[00:16:08 INFO]: Paper Plugins:
[00:16:08 INFO]: - Coins, HuskHomes, ServiceIO
[00:16:08 INFO]: Bukkit Plugins:
[00:16:08 INFO]: - AuthMe, Chunky, ClientDetectorPlus, CMILib, CoreProtect, DecentHolograms, DreamCleaner, EasyBot, Essentials, EssentialsX-GUI
[00:16:08 INFO]: EzOfflinePapi, HuskHomesGUI, LiteSignIn, LockettePro, LuckPerms, ModContainerProtect, OpenInv, PlaceholderAPI, Plan, ProtocolLib
[00:16:08 INFO]: qsaddon-list, qsaddon-plan, qssuite-limited, QuickShop-Hikari, Residence, ResidenceList, ResidenceSafe, SimpleTips, SkinsRestorer, TAB
[00:16:08 INFO]: ZMusic

ServiceIO Version

'service-io-3.0.0-pre11'

Paper version

version
[00:15:28 INFO]: 此服务器正在运行 Youer 版本 1.21.1-bfb3941d (2026-06-17T02:26:19+08:00) (实现 API 版本 1.21.1-R0.1-SNAPSHOT，NeoForge 版本 21.1.233)
You are running the latest version

Checklist

• I am using the newest build from https://github.com/TheNextLvl-net/service-io and the issue still persists.

Anything else?

The server's runtime libraries have been inspected, and the corresponding MiniMessage library version is 4.17.0.

The MiniMessageTranslationStore class appears to be missing from the adventure library shipped with this Paper/NeoForge build, even though the plugin expects it to be present. This suggests a version mismatch between the adventure library the plugin was compiled against and what the server provides.

Since the error occurs at load time and there are no obviously incompatible plugins, I have not used the “Incompatible” issue type. However, if further testing on a hybrid server is needed, I am available to help.

[NonSwag]

Hey, please use english for opening issues. I can't read the language you are using.
All I can say is that 1.21.1 is not a supported version, please update your server.

[XChen446]

Apologies for not noticing that version 1.21.1 is not supported.
But also tested the last version that Modrinth marks as compatible with 1.21.1 – service-io-2.3.2 – and it still fails to load with exactly the same error. Here is the stack trace for that attempt :

service-io-2.3.2-all.jar stacktrace

[2026-06-20 10:51:42.608] [Server thread/ERROR]: Could not load plugin 'service-io-2.3.2-all.jar' in folder 'plugins'
java.lang.reflect.InvocationTargetException: null
    at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:74) ~[?:?]
    at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?]
    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) ~[?:?]
    at TRANSFORMER/neoforge@21.1.233/io.papermc.paper.plugin.provider.util.ProviderUtil.loadClass(ProviderUtil.java:59) ~[neoforge-21.1.233-universal.jar!?:1.21.1]
    ...
Caused by: java.lang.NoClassDefFoundError: net/kyori/adventure/text/minimessage/translation/MiniMessageTranslationStore
    at service-io-2.3.2-all.jar/core.i18n.file.ComponentBundleImpl$Builder.build(ComponentBundleImpl.java:260) ~[?:?]
    at service-io-2.3.2-all.jar/net.thenextlvl.service.ServicePlugin.<init>(ServicePlugin.java:42) ~[?:?]
    ...
Caused by: java.lang.ClassNotFoundException: net.kyori.adventure.text.minimessage.translation.MiniMessageTranslationStore
    at TRANSFORMER/neoforge@21.1.233/io.papermc.paper.plugin.entrypoint.classloader.PaperPluginClassLoader.loadClass(PaperPluginClassLoader.java:145) ~[neoforge-21.1.233-universal.jar!?:1.21.1]
    ...

Since even the version that claims 1.21.1 support has the same problem, and the newest version behaves identically, I ended up reporting the bug with the latest build simply because I had no other alternative.

[NonSwag]

Yeah, that is my bad, I am not sure at what point 1.21.1 support broke, since I forgot to remove the version as supported when I did.