---
title: "How Do I Fix the ‘JSON - Exception in Server Tick Loop Error?"
description: "Information on how to fix the JSON-Exception in server tick loop error"
url: https://help.chiphead.tech/en/articles/82-how-do-i-fix-the-json-exception-in-server-tick-loop-error
collection: "Minecraft"
updated: 2026-06-01
language: en
---

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

Information on how to 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:

```javascript
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**.
    
    ![](https://staticfiles.gleap.io/gattachments/TF6Y5z4KvbFuNVRt2M2DdFTUe6xG4Xb5zKQmdQLYp2M0dwQ5mOC7rr3o2JmUlMpT5QBYVJ6q749.png)
    
2.  Stop your server.
    
    ![](https://staticfiles.gleap.io/gattachments/LoGD1NbkymJWIy152h1CtW8IPcHxJNNj8kGvt0Pbpzak2Z7DuCbcJypzeJKAsdXhCaS5ox7TAaA.png)
    
3.  Go to the **Files** tab.
    
    ![](https://staticfiles.gleap.io/gattachments/XaCXcmXHEBDbS7liIOStOUcFAsNLj5u7LqoOAokcshQWF9qTIUFuSxBSRs8TI8Zjw82fYHNuWHT.png)
    
4.  Select the following files and delete them:
    
    -   `ops.json`
        
    -   `whitelist.json`
        
    -   `usercache.json`
        
5.  Start your server again.
    
    ![](https://staticfiles.gleap.io/gattachments/DaFnuxWJV5EywvLHwH3hzQma0RvnEhXX1oQqcuRjEhSnMDRuoUeNgY2WVIYRhWctQcu3j4unTjy.png)
    

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