Getting posts, FacebookResponse contains an empty body - php

Question

I'm trying to get posts from my Facebook page, where I'm is logged now, like this:
try {
$response = $fb->get('/me/posts', $accessToken->getValue);
} catch(Facebook\Exceptions\FacebookResponseException $e) {
echo 'Graph returned an error: ' . $e->getMessage();
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
var_dump($response->getDecodedBody());
getDecodedBody returns
array (size=1) 'data' =>
array (size=0)
empty
Or like this
$json_object = file_get_contents('https://graph.facebook.com/me/posts?&access_token=' . $accessToken->getValue());
$posts = json_decode($json_object);
var_dump($posts);
and I getting the same result.
Update:
I have created access token using javascript
window.onload = function() {
FB.login(function(response) {
if (response.authResponse) {
//alert('You are logged in & cookie set!');
// Now you can redirect the user or do an AJAX request to
// a PHP script that grabs the signed request from the cookie.
location.href = 'http://localhost/FB/js-login.php';
} else {
alert('User cancelled login or did not fully authorize.');
}
});
return false;
};
window.fbAsyncInit = function() {
FB.init({
appId: '123450723574945',
cookie: true, // This is important, it's not enabled by default
version: 'v2.2'
});
};
(function(d, s, id){
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) {return;}
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/en_US/sdk.js";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
And got it in php
$helper = $fb->getJavaScriptHelper();
$accessToken = $helper->getAccessToken();
var_dump($accessToken) result:
object(Facebook\Authentication\AccessToken)[13]
protected 'value' =>
string 'EAABrvUukr0EBAH8yuJpQkhdkZCZBW' (length=207)
protected 'expiresAt' =>
object(DateTime)[15]
public 'date' => string '2017-06-08 16:00:00.000000' (length=26)
public 'timezone_type' => int 3
public 'timezone' => string 'UTC' (length=3)
As I can see, expiresAt property conrains date less then now, but I don't have any errors messages.