Please stop using this extension and Microsoft's C++ extension for Unreal code completion.
The VSCode extension clangd has blazing fast code completion in comparison. I've made a VSCode extension for it:
https://github.com/boocs/unreal-clangd
You will use clangd for code completion(Intellisense) and use Microsoft's C++ extension for Building/Debugging
This guide should remove all Intellisense errors from your project. I've recently finished a Udemy series and had no problems fixing any Intellisense errors with this guide.
I've tested this in both Visual Studio 2019 and VSCode (Latest Microsoft C++ plugin). They both work. (Windows 10)
Some other compilers, with their version of Intellisense, may still be helped by some of this info.
