Server setup

java.lang.IllegalStateException: zip file closed

What the log looks like

java\.lang\.IllegalStateException: zip file closed
IllegalStateException: zip file closed[\s\S]{0,400}org\.bukkit\.plugin\.java\.PluginClassLoader\.findClass

How to fix it

  1. Perform a full server restart with /stop instead of using /reload, PlugMan, or in-game plugin reload commands that disable and re-enable plugins.
  2. Never overwrite, rename, or delete .jar files in your plugins folder while the server is online; always stop the server before updating plugins or use the plugins/update folder.
  3. Search earlier in logs/latest.log for messages showing the affected plugin disabling itself on startup (such as a missing bot token, database failure, or invalid config) and fix that configuration issue so its classloader stays open.
  4. Update the affected plugin to a newer Paper-compatible build if its built-in reload command triggers 'Enabled plugin with unregistered PluginClassLoader' warnings.
LoadersServer
SeverityBreaks something
CategoryServer setup

Check your own log

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