javascript - Facebook deleting post -

i'm using faceebok js api, function fb.ui post. whenever click on post no text, post deleted seconds after posted. when enter text, doesn't deleted. function is:

function postar(){           fb.ui(   {     method: 'feed',     name: 'x',     link: 'x',     picture: 'x',     caption: 'x',     description: 'x'   },   function(response) {     if (response && response.post_id) {       console.log('post published.');     } else {       console.log('post not published.');     }   } );  

does know how can solve it?

thanks in advance