Cordova: Can't able to get user information, it shows 'malformed access token' - facebook

Question

I am about to finish my cordova application where i am using the facebook social login. I am trying to access the user information from the graph API that openfb.js is calling. My code snippet is this:
function login() {
openFB.login(
function (response) {
if (response.status === 'connected') {
alert(JSON.stringify(response));
FACEBOOK_TOKEN = response.authResponse.accessToken;
var message = "Connected to Facebook_____";
alert('Message is :' + message);
alert('Access token is :' + FACEBOOK_TOKEN);
getInfo(response.authResponse.accessToken);
} else {
var errorMessage = 'Facebook login failed: ' + response.error + "_____";
alert(errorMessage);
}
}, {scope: 'email,public_profile,user_birthday,user_location'});
}
function getInfo(access_token) {
openFB.api({
path: '/2.5/me?access_token=' + access_token,
success: function (data) {
alert(JSON.stringify(data));
var message = "Logged in with Facebook as " + data.name + "_____";
alert(message);
},
error: errorHandler
});
}
function errorHandler(error) {
var errorMessage = error.message;
alert('Error is : '+errorMessage);
}
Here in this case when i am getting the access token of the user but when i pass it to graph API that is in the get info function, then it shows me the error:
Error is : Malformed access token CAANoTLg2W..........
I am not able to debug the error ocuring here. Please help me resolve it.
Thank in advance for any response.