Facebook api ดึงค่าไม่ได้แต่อย่างอื่นโอเคเเล้วครับ

<?php
session_start();
include("facebooksdk/src/facebook.php"); 
$facebook = new Facebook(
	array(
		'appId'  => 'xxxxxxxx', 
		'secret' => 'xxxxxxxx',  
		'cookie' => true,  
));
$fb_user = $facebook->getUser();

if($fb_user){ 
	try{
		$fb_userData = $facebook->api('/me','GET');<<<<<<ตัวที่คิดว่าน่าจะมีปัญหาครับ
	}
	catch(FacebookApiException $e) { 
		error_log($e);
		$user=null;
		error_log($e->getType());
		error_log($e->getMessage());
	}
}

if(isset($_GET['logout'])){ 
	$facebook->destroySession(null); 
	header("Location:".$_SERVER['PHP_SELF']);
}

if($fb_user){
	$logoutUrl = $facebook->getLogoutUrl(
		array(
			"next"=>"www........com"
		)
	);
} 
else{
	$loginUrl = $facebook->getLoginUrl(
		array(
			"redirect_uri"=>"wwww.....com",
			"display"=>"popup",
			"scope"=>"offline_access,publish_stream,email" 
		)
	);
}

?>