New Post: TwitterCredentials doesn't exist in context

Hi,

Don't have anything in project.

This is the only method...even page load is still blank currently.

Added below namespaces manually:

using Tweetinvi;
using Tweetinvi.Model;
using Tweetinvi.Helpers;
using Tweetinvi.TwitterEntities;
using TweetinCore;
using TweetinCore.Interfaces;
using TwitterToken;
using TweetinCore.Extensions;
using Tweetinvi.Core;
using Tweetinvi.Core.Enum;
using Tweetinvi.Core.Extensions;
using Tweetinvi.Core.Interfaces;
using Tweetinvi.Core.Interfaces.Controllers;
using Tweetinvi.Core.Interfaces.DTO;
using Tweetinvi.Core.Interfaces.DTO.QueryDTO;
using Tweetinvi.Core.Interfaces.Models;
using Tweetinvi.Core.Interfaces.Models.Parameters;
using Tweetinvi.Core.Interfaces.Streaminvi;

While building project getting this error.