linkedin api strange empty response

Question

I'm using the linkedin Javascript API to retrive the posts of a group but I have empty response. As you can see If I request a group detail the API response have something inside but, if I ask the posts the response is empty.

This is my code

$.getScript("http://platform.linkedin.com/in.js?async=true", function success() {
    IN.init({
        'api_key': apiKey,
        onLoad: "onLoadedLinkedin"
    });
});


onLoadedLinkedin = function(){
    console.log('linkedin init: ok');

    IN.API.Raw("groups/35920").result(function callback(result) { console.log(result);});
    IN.API.Raw("groups/35920/posts?count=5&start=5").result(function callback(result) { console.log(result);});
}

And there are the response

How can I retrive correctly this posts?

Answer 1

Some groups in LinkedIn can be marked "members-only", which would require you to authenticate as a particular member that has access to the group you are trying to read before being able to see the contents of the group.