Zeronet not working in official latest release - window.wrapper is undefined (version 0.7.1)

### Step 1: Please describe your environment

* ZeroNet version: 0.7.1 (rev 4206)
* Operating system: Manjaro
* Web browser: Firefox 81.0 64-bit (including incognito, including all extensions turned off)
* Tor status: disabled
* Opened port: yes
* Special configuration: no

### Step 2: Describe the problem:

Échec du chargement pour l’élément dont la source est « http://127.0.0.1:43110/uimedia/all.js?rev=4206&lang=fr ». 1HeLLo4uzjaLetFx6NH3PMwFP3qbRbTf3D:95:1
Uncaught TypeError: window.wrapper is undefined
<anonymous> http://127.0.0.1:43110/1HeLLo4uzjaLetFx6NH3PMwFP3qbRbTf3D:96

Sites don't load properly.

#### Steps to reproduce:

1. Enter any zeronet site.

#### Observed Results:


#### Expected Results:

Sites load properly.

Reproduce the failure by opening any ZeroNet site with version 0.7.1, then inspect uimedia/all.js and the site script around line 96 where window.wrapper is accessed. Trace why window.wrapper is undefined and verify that sites load properly after the issue is addressed.

Escrito por el modelo de indexación a partir del texto del issue.