C1083 / error MSB3073

Hello. I ask for your help.
When creating a class, I have error C1083 in Unreal Engine and error MSB3073 in Visual Studio
More details in the video link:

copy/paste text and/or pictures should be fine…

Could you show us your module Build.cs file, please?
Anyway try to #include “Floater.h” instead of “GActor/Floater.h” in your Floater.cpp file