rake aborted error.

Hy guys, how I fix this problem? I saw others topics but not solved. Link to view errors: rake aborted!Could not find a JavaScript runtime. See https://github.com/sstep - Pastebin.com

When I submit on terminal: rake -T

He return errors(in link)

This error happens when I submit db:create in my app folder.

What do you see when you follow the instructions on line 2:

Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes.