Unhandled exception: TypeError: expected str, bytes or os.PathLike object, not NoneType

### 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?

该 issue 未提供复现步骤、环境详情或源文件；首先收集所请求的 ZeroNet 版本、操作系统、浏览器、Tor 和端口设置，然后复现 TypeError。检查提供的 log/debug.log 输出，以确定失败的入口点；当获得可复现的案例以及已确认的代码路径或可采取行动的诊断时，即视为完成。

由索引模型根据 Issue 内容生成。