Unhandled exception: Exception: Unable to load E:/ZeroNet-win-dist-win64/data/sites.json: Expecting value: line 1 column 1 (char 0)

### Step 1: Please describe your environment

* ZeroNet version: _____
* Operating system: _____
* Web browser: _____
* Tor status: not available/always/disabled
* Opened port: yes/no
* Special configuration: ____

### Step 2: Describe the problem:

#### Steps to reproduce:

1. _____
2. _____
3. _____

#### Observed Results:

* What happened? This could be a screenshot, a description, log output (you can send log/debug.log file to hello@zeronet.io if necessary), etc.

#### Expected Results:

* What did you expect to happen?

报告指向 data/sites.json 以及一个说明其 JSON 无法解析的异常。首先获取缺失的 ZeroNet 版本、操作系统、浏览器、Tor 和端口状态、复现步骤以及相关日志输出；只有在找到可复现的原因并验证了加载此文件的解决方案后，才算完成。

由索引模型根据 Issue 内容生成。