uncaught exception: INVALID_TOKEN | (intermediate value).forEach is not a function with AJAX response(JSON format)

I am getting error uncaught exception: INVALID_TOKEN (intermediate value).forEach is not a function

My code is:

$('#start')
    .on('click', function() {
        $.getJSON('/twillio-new/token.php', {
            name: $('#my-name')
                .val(),
            identity: $('#my-identity')
                .val()
        }, function(data) {
            // Create the endpoint, and then initialize the main calling app
            var endpoint = new Twilio.Endpoint(data.token);
            $('#startDiv')
                .hide();
            $('#callDiv')
                .show();
            init(endpoint);
        });
    });

JSON Response:

{"name":"cool room","identity":"test","token":"eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiIsImN0eSI6InR3aWxpby1mcGE7dj0xIn0.eyJqdGkiOiJlMWE3NTI4YzYyMzdiMGE0MmZlYTc0NDk2MjRlOTFiNC0xNTA3MjEwNjQyIiwiaXNzIjoiZTFhNzUyOGM2MjM3YjBhNDJmZWE3NDQ5NjI0ZTkxYjQiLCJzdWIiOiJBQzVlMTVhMDg5NjVkNWRjM2ZkOWI3YmNiOGMyM2FhMjgxIiwiZXhwIjoxNTA3MjE0MjQyLCJncmFudHMiOnsiaWRlbnRpdHkiOiJ0ZXN0IiwidmlkZW8iOnsicm9vbSI6IiRuYW1lIn19fQ.pvfGEoVripcjq588p8l3QixuVJ4sHBjMdmWa8tspTtY"}

I am generating and getting access token for Twilio Video calling api using this. Please let me know what is wrong with this code?

Which SDK do you have installed? I have seen this error when the code being used was for the incorrect SDK. Looks like the code you are using is for the version 5. Do you have version 5 installed? There have been numerous version based issues with Twilio