Enable visual studio for project

Hi every one, I already made a post on answerhub but I think I have my chance here too. link => https://answers.unrealengine.com/questions/420505/cant-open-project-in-visual-studio-ue-from-source.html

I just wanted to know why I can’t open my project in VS and how correct this. It’s the first time I use the source code, so maybe I just need to rebuild something or I don’t know. I have some image to explain well my problem. Thanks for futur answer !

Have a good day!