javascript - Skype SDK entry point to sign in a user error: NoFQDN -

i'am trying sign skype via use of sdk keep hitting following error, "error: nofqdn". after searching on net can't find possible solution or find out error means. can shed light on or point me towards useful sources? appreciated, thanks.

this javascript i'm using try , log skype with.

  /**  * script demonstrates how sign user in , how sign out.  */ $j(function () {     'use strict';    // create instance of application object;     // note, different instances of application may     // represent different users     var application     var client;     skype.initialize({         apikey: 'swx-build-sdk',     }, function (api) {         application = api.application;         client = new application();     }, function (err) {         alert('some error occurred: ' + err);     });      // when user clicks on "sign in" button         $j('#signin').click(function () {     // start signing in     client.signinmanager.signin({         username: $j('#username').text(),         password: $j('#password').text()     }).then(         //onsuccess callback         function () {             // when sign in operation succeeds display user name             alert('signed in ' + client.personsandgroupsmanager.meperson.displayname());         },          //onfailure callback         function (error) {             // if goes wrong in either of steps above,             // display error message             alert(error || 'cannot sign in');         });     });      // when user clicks on "sign out" button     $j('#signout').click(function () {     // start signing out     client.signinmanager.signout()         .then(             //onsuccess callback             function () {                 // , report success                 alert('signed out');             },          //onfailure callback         function (error) {             // or failure             alert(error || 'cannot sign in');         });     });      // whenever state changes, display value         client.signinmanager.state.changed(function (state) {         $j('#application_state').text(state);     });     }); 

can see problem this?

after digging it: error message getting pointing out sign in parameters (user, password) "null"/undefined.

setting values other "null"/undefined login started. note looking @ javascript code, hardcoded check.