No eligible build target

Hi I just installed for Atom to work on my Arduino projects.

I did everything said in this : Redirecting...

I am on Mac (Sierra)

But still everytime I want to build or to Upload I got that message of no eligible build target.

Don’t understand what to do. Did I miss something? Or the doc miss a step?

Thank You

Atom is deprecated. Please use PlatformIO IDE for VSCode.