I can't play minecraft anymore!

If i want to play minecraft you need to start your launcher and click on ''play''

If i click on ''play'' it doesn't go to minecraft the game but to Game Output.

There isn't anything on Game Output. I reinstalled minecraft but that doesn't work either.

I tried also older versions. But then you have the same problem.

Btw i have a mac.

And the latest java.

Plz Help