Once upon a time, Qt used a different module called WebKit to render web contents on its user interface. However, the WebKit module has been completely deprecated since version 5.5 and replaced by a new module called WebEngine.
The new WebEngine module is based on the Chromium framework built by Google, and it will only work on the Visual C++ compiler on the Windows platform. Therefore, if you're running Windows, please make sure that you have installed Microsoft Visual Studio on your computer as well as all the MSVC components for Qt that match the version of Visual Studio installed on your computer. Other than that, the Qt WebEngine component is also required for this particular chapter. If you have skipped the components during Qt's installation, all you need to do is to run the same installer again and install it there: