wx.html2.WebView NotImplementedError (Ubuntu GTK)

[Patitotective]

Operating system: Ubuntu 20.04
wxPython version & source: 4.1.1 gtk3 (phoenix) wxWidgets 3.1.5 (built wheel from PyPi).
Python version & source: Python 3.9.5.

Description of the problem

I'm trying to implement a loading spinner animation as html and css into a wx.html2.WebView but I'm getting NotImplementedError.
I've found two other persons having the same issue: Chapter 6: NotImplemented and Why is it not available in CentOS wx.html2 . WebView control？

Code Example (click to expand)

import wx
from wx.html2 import WebView


class MyFrame(wx.Frame):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)

        browser = WebView.New(self)

        self.Show()


if __name__ == "__main__":
    app = wx.App()
    frame = MyFrame(parent=None)
    app.MainLoop()

[swt2c]

I just answered that stackoverflow post, but here's a slightly modified response for Ubuntu:

NotImplementedError means that wxPython was compiled without wx.html2 support. The most likely cause of this on Linux is that the WebKit2 development packages were not present when you installed/compiled wxPython. To resolve this, install the WebKit2 development package and reinstall wxPython. On Ubuntu, the WebKit2 development package is libwebkit2gtk-4.0-dev, so install it with the package manager, e.g., apt install libwebkit2gtk-4.0-dev and then uninstall/reinstall wxPython. Note: you may have to also clear the pip cache so that it won't re-use the previously compiled version of wxPython.

[Patitotective]

Thanks @swt2c for the answer, it worked.
(Although it took kinda 1 to build the wheel)