Customization with Minecraft - No plugins not loading into server

System Information

Field Value
Operating System Linux - Debian GNU/Linux 12 on x86_64
Product AMP ‘Callisto’ v2.5.0.14 (Mainline)
Virtualization Docker
Application Minecraft
Module MinecraftModule
Running in Container Yes
Current State Ready

Problem Description

Issue

I updated to MC 1.21 (Paper), but I do not see any Plugins loaded. Even if they’re not supported (for argument’s sake), they usually show up in red if they were unable to run.

It’s almost as if they’re not even being detected.

Sorry, forgot to paste in the console logs.

Console12:55:35
java.lang.RuntimeException: Failed to open plugin jar plugins/8631-v541095__CoreProtect.jar
at io.papermc.paper.pluginremap.PluginRemapper.remap(PluginRemapper.java:339) ~[paper-1.21.jar:1.21-15-2df432f]
at io.papermc.paper.pluginremap.PluginRemapper.remapPlugin(PluginRemapper.java:266) ~[paper-1.21.jar:1.21-15-2df432f]
at io.papermc.paper.pluginremap.PluginRemapper.rewritePluginDirectory(PluginRemapper.java:204) ~[paper-1.21.jar:1.21-15-2df432f]
at io.papermc.paper.plugin.provider.source.DirectoryProviderSource.prepareContext(DirectoryProviderSource.java:42) ~[paper-1.21.jar:1.21-15-2df432f]
at io.papermc.paper.plugin.provider.source.DirectoryProviderSource.prepareContext(DirectoryProviderSource.java:17) ~[paper-1.21.jar:1.21-15-2df432f]
at io.papermc.paper.plugin.util.EntrypointUtil.registerProvidersFromSource(EntrypointUtil.java:14) ~[paper-1.21.jar:1.21-15-2df432f]
at io.papermc.paper.plugin.PluginInitializerManager.load(PluginInitializerManager.java:109) ~[paper-1.21.jar:1.21-15-2df432f]
at net.minecraft.server.Main.main(Main.java:122) ~[paper-1.21.jar:1.21-15-2df432f]
at org.bukkit.craftbukkit.Main.main(Main.java:298) ~[paper-1.21.jar:1.21-15-2df432f]
at io.papermc.paperclip.Paperclip.lambda$main$0(Paperclip.java:42) ~[app:?]
at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: java.util.zip.ZipException: zip END header not found
at jdk.zipfs@21.0.2/jdk.nio.zipfs.ZipFileSystem.findEND(ZipFileSystem.java:1320) ~[jdk.zipfs:?]
at jdk.zipfs@21.0.2/jdk.nio.zipfs.ZipFileSystem.initCEN(ZipFileSystem.java:1541) ~[jdk.zipfs:?]
at jdk.zipfs@21.0.2/jdk.nio.zipfs.ZipFileSystem.<init>(ZipFileSystem.java:179) ~[jdk.zipfs:?]
at jdk.zipfs@21.0.2/jdk.nio.zipfs.ZipFileSystemProvider.getZipFileSystem(ZipFileSystemProvider.java:125) ~[jdk.zipfs:?]
at jdk.zipfs@21.0.2/jdk.nio.zipfs.ZipFileSystemProvider.newFileSystem(ZipFileSystemProvider.java:120) ~[jdk.zipfs:?]
at java.base/java.nio.file.FileSystems.newFileSystem(FileSystems.java:528) ~[?:?]
at java.base/java.nio.file.FileSystems.newFileSystem(FileSystems.java:440) ~[?:?]
at io.papermc.paper.pluginremap.PluginRemapper.remap(PluginRemapper.java:290) ~[paper-1.21.jar:1.21-15-2df432f]
... 10 more

Reproduction Steps

  • Install plugin
  • Launch Server
  • Check for running plugins
  • 0 plugins found

Try downloading the plugin manually and upload it to AMP’s interface.
Some plugin devs set their download URL to something that isn’t a Jar, and that causes issues.

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