Access token shows a null after calling other API

Hi,

 

This is my code :

 

var login = new LoginData() { Email = email, Password = password };

var response = await client.PostAsJsonAsync(URI, login);
var token = response.Content.ReadAsAsync<TokenResponse>(new[] { new JsonMediaTypeFormatter() }).Result;

client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token.AccessToken);

if (response.IsSuccessStatusCode)
{

var productJsonString = await response.Content.ReadAsStringAsync();
LoginData loginObj = JsonConvert.DeserializeObject<LoginData>(productJsonString);
Body_textBox.Text = productJsonString;
} 

 

first time login its generate a access token but calling different api is shows null.

 

uri like this : http://localhost:54075/api/members/login

 

 

first uri works fine. but second uri shows access token values is null.