type error

### Step 1: Please describe your environment

* ZeroNet version: 0.72 rev 4555
* Operating system: linux
* Web browser: tor browser
* Tor status: always
* Opened port: no
* Special configuration: due to gevent for py 3.6 no longer being avalible it is using python 3.9

### Step 2: Describe the problem:

Unhandled exception: TypeError: '>' not supported between instances of 'int' and 'str' in /greenlet.py line 906 > Worker.py line 208 > 154 > BigfilePlugin.py line 401 > ContentManager.py line 1006 > 1000 > 887 > 902

#### Steps to reproduce:

launch zeronet then open in browser, then try to click on a zite. produces an error