Error running SDK: Error connecting to remote host:127.0.0.1

Hi All,

I'm using Pycharm 3.4.2 and Vagrant. I config Python Interpreter on vagrant box. And Pycharm have already seen my vagrant box. You can see this in attached image.

But, i click on "Python Interpreter Path", Pycharm always alert " Test SFTP connection: Connection to '127.0.0.1' failed. Connection failed " . I don't know why as so and how to solve this problem.

And the addition error is " Error running SDK : error connection to remote host : 127.0.0.1"

I spent a lot ot hours for researching. Please help me to solve this problem. Please please please!

P/S you can see the attached images for more detail.