Ошибка с преобразованием типов - C#

private Task<List<TwitterResult>> SearchUserTweet(string value)
        {
            var result = new List<TwitterResult>();
 
            try
            {
                var statusResponse = (from tweet in _twitterContext.Status
                                      where tweet.Type == StatusType.User
                                            && tweet.ScreenName == value
                                            && tweet.Count == 200
                                      select tweet).ToList();
 
                result = statusResponse.Select(x => new TwitterResult()
                {
                    UserName = x.User.ScreenName,
                    TwitterText = x.Text,
                    DateTime = x.CreatedAt
                }).ToList();
 
            }
            catch (ArgumentNullException exception)
            {
                throw exception;
            }
            catch (TwitterQueryException exception)
            {
                throw exception;
            }
            catch (AggregateException exception)
            {
                throw exception;
            }
 
            return result;
        }