'FB.logout() called without an access token

I'm trying to log out of a website i've created with Facebook integrated. Logging in works fine, but when I want to log out Firebug consistently gives me this error:

FB.logout() called without an access token.

I'm using the Facebook JavaScript SDK, and the code I've got to logout looks like this:

$(document).ready($(function () {
    $("#fblogout").click(facebooklogout);
}));

function facebooklogout() {
    FB.logout(function (response) {
    }
)};

This is the logout code specified at the Facebook Developers Documentation just with a button being assigned the method on document.ready

Before this code I have the FB.init() method, that all runs fine.

If anyone's got a solution as to why FB.logout doesn't have an access token, it'd be appreciated.

Solution 1:^[1]

I went for the less trivial solution:

    function facebookLogout(){
        FB.getLoginStatus(function(response) {
            if (response.status === 'connected') {
                FB.logout(function(response) {
                    // this part just clears the $_SESSION var
                    // replace with your own code
                    $.post("/logout").done(function() {
                        $('#status').html('<p>Logged out.</p>');
                    });
                });
            }
        });
    }

Solution 2:^[2]

Figured it out after so many tries.

Generally response.authResponse.accessToken contains token. So, its error about the accessToken not being there.

Think logically, where does that response come from in your code? Out of nowhere.

So, we need to get that response object from a function and get this working. I don't know how it worked for others, but this worked for me.

Just replace the code with this

function logout(){
  FB.getLoginStatus(function(response) {
    FB.logout(function(response){
      console.log("Logged Out!");
      window.location = "/";
    });
  });
}

What we do here is, get the login status if the user is logged in and get the corresponding response in return, which contains all the necessary tokens and data. Once this is fetched, the token is used to log out the user.

Solution 3:^[3]

I've tried something like this:

function fbLogout(){
    if(typeof FB.logout == 'function'){
        if (FB.getAuthResponse()) {
         FB.logout(function(response) { window.location.href = PROJECT_PATH + '/index/logout'; }); 
         return;
        }  
    };

    window.location.href = PROJECT_PATH + '/index/logout'; 
    return;  
}

Solution 4:^[4]

Should be something more like this. There was a change to the JS API where you have to use authResponse instead of just session.

//handle a session response from any of the auth related calls
function handleSessionResponse(response) {

    //if we dont have a session (which means the user has been logged out, redirect the user)
    if (!response.authResponse) {
        return;
    }

    //if we do have a non-null response.session, call FB.logout(),
    //the JS method will log the user out of Facebook and remove any authorization cookies
    FB.logout(response.authResponse);
}

Solution 5:^[5]

The error says that you don't have an access token, you have to check for one using the FB.getAccessToken() function.

If there is no access token the function returns null. See example below:

   function facebooklogout() {
    try {
        if (FB.getAccessToken() != null) {
            FB.logout(function(response) {
                // user is now logged out from facebook do your post request or just redirect
                window.location.replace(href);
            });
        } else {
            // user is not logged in with facebook, maybe with something else
            window.location.replace(href);
        }
    } catch (err) {
        // any errors just logout
        window.location.replace(href);
    }
   }

Solution 6:^[6]

With Typescript this function do work fine ..

  signOutFacebook(): void {
    /*SIGN OUT USER FACEBOOK.*/
    FB.getLoginStatus(function (response) {
      if (response.status === 'connected') {
        FB.logout(function (response) {
          console.log("Logged Out!");
        });
      } else {
        console.log("The person is not logged into your webpage or we are unable to tell. !");
      }
    });
  }/*FINAL 'signOutFacebook()'. */

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	Ozzy
Solution 2
Solution 3	kapa
Solution 4	Eric Novins
Solution 5	Mihai CrÄƒiÈ›Äƒ
Solution 6	Arturo

'FB.logout() called without an access token

Solution 1:[1]

Solution 2:[2]

Solution 3:[3]

Solution 4:[4]

Solution 5:[5]

Solution 6:[6]