Closed issue by el-christianito on void-packages repository

https://github.com/void-linux/void-packages/issues/30914

Description:
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### System

* xuname:  
Void 5.11.18_1 x86_64 AuthenticAMD uptodate hold rrrmFFFFFFFFF

* package:
gufw-21.04.0_2, potentially libwpe-1.10.0_2 or webkit2gtk-2.32.1_1

### Expected behavior
gufw GUI shows on screen

### Actual behavior
warning displayed and nothing starts
```
** (gufw.py:20206): WARNING **: 13:56:16.898: Failed to load shared library 'libwebkit2gtk-4.0.so.37' referenced by the typelib: libwpe-1.0.so.1: cannot open shared object file: No such file or directory
/usr/lib/python3.9/site-packages/gufw/gufw/view/gufw.py:117: Warning: cannot retrieve class for invalid (unclassed) type 'void'
  self.web_content = WebKit2.WebView()
Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/gufw/gufw.py", line 30, in <module>
    gufw = Gufw(controler.get_frontend())
  File "/usr/lib/python3.9/site-packages/gufw/gufw/view/gufw.py", line 79, in __init__
    self._set_objects_name()
  File "/usr/lib/python3.9/site-packages/gufw/gufw/view/gufw.py", line 117, in _set_objects_name
    self.web_content = WebKit2.WebView()
TypeError: could not get a reference to type class
```
The file does definitely exist under /usr/lib:
![bugticket_gufs](https://user-images.githubusercontent.com/9352289/118360092-620a0100-b586-11eb-8a27-7a8adba49934.png)


### Steps to reproduce the behavior
`sudo gufw`