You may have encountered this error message on your Minecraft server causing it to crash or prevent it from starting up. This typically means that one of your .json configuration files may have become corrupt.

The error: java.lang.NullPointerException: Exception in server tick loop

Head to the game control panel and let’s get this fixed:

  1. Stop the server
  2. Head to the file manager
  3. Find and delete whitelist.json, banned-player.json, and banned-ips.json
  4. Start the server

This will regenerate the files in a correct format for you.

Alternatively, you can restore a backup of those files or you can also make sure it’s correctly formatted with a json validator & formatter tool ensuring they have the [] symbol at the beginning and end of the files.

Still running into issues? Have a chat us in our Discord community, or contact support team.

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Connection timed outFailed to check session lock