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May 13, 2026

Minecraft Server Log Files: How to Read and Troubleshoot Errors

Learn how to read Minecraft server log files to diagnose errors, plugin conflicts, and startup failures. A guide for CraftNodes Pterodactyl users.


Where Are Log Files?

Minecraft server logs are stored in the logs/ folder in your server directory. The current log is logs/latest.log. Previous days are archived as compressed files like 2026-05-13-1.log.gz.

Reading the Log

Each log line has a timestamp, source, and message. Look for lines containing [ERROR], [WARN], or Exception — these indicate problems.

Common Errors and Solutions

  • Failed to bind to port — Another process is using your server port. Restart the server or check for other running instances.
  • Could not load plugin — Plugin JAR is corrupt, incompatible with your Minecraft version, or missing a dependency. Check the plugin's required dependencies.
  • OutOfMemoryError — Your server is running out of RAM. Upgrade your plan or reduce plugin/mod load.
  • ClassNotFoundException — A plugin dependency is missing. Install the required API plugin (e.g. Vault, PlaceholderAPI).

Viewing Logs on CraftNodes

The Pterodactyl console shows real-time log output. For historical logs, use the File Manager to navigate to the logs/ folder and click any log file to view it in the browser editor.


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