How Do I Fix the ‘JSON - Exception in Server Tick Loop Error?

Overview

The “JSON - Exception in server tick loop” error occurs when there’s a problem with your server’s .json files - specifically ops.json, whitelist.json, or usercache.json. Deleting these files and restarting your server will allow new, working versions to be created automatically. If you need help, our support team is always available.

Example Console Error:

java.lang.NullPointerException: Exception in server tick loop
at net.minecraft.server.v1_7_R3.JsonList.load(JsonList.java:171)

Steps to Fix the Error:

1. Log in to the ChipHead Panel.

   

2. Stop your server.

   

3. Go to the Files tab.

   

4. Select the following files and delete them:

   • ops.json

   • whitelist.json

   • usercache.json

5. Start your server again.

   

Your server will automatically generate new versions of these files, resolving the error.