I am trying to publish feed through feed form but the feed form doesnot appear. However, the update happens and it happens twice. Also it says "Error thrown by application" in the dialog box.

$message = "has invited you for all for hanging out wid him...the details being..";

//$facebook->api_client->stream_publish($message,null,null,$user,$user);

$attachment = array(
'name' => 'Name',
'href' => 'http://www.facebook.com',
'caption' => 'Caption',
'description' => 'Description');
$attachment = json_encode($attachment);

$action_links = array(array(
'text' => 'Action Link',
'href' => 'http://www.facebook.com'));
$action_links = json_encode($action_links);

$facebook->api_client->stream_publish($message, $attachment, $action_links);

Please tell me what can be done here?