title: Messages are not receiving from aws sqs fifo queue in .net core
body: <p>I have used aws toolkit in .net to fetch messages from aws sqs in lambda function but messages are not coming.In these code sqs console is also coming empty on cloudwatch and same receiveMessageResponse is also coming empty.</p>
  
  <pre><code>using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Threading.Tasks;
  
  using Amazon;
  using Amazon.Lambda.Core;
  using Amazon.SQS;
  using Amazon.SQS.Model;
  
  
   [assembly: 
  LambdaSerializer(typeof(Amazon.Lambda.Serialization.Json.JsonSerializer))]
  
      namespace AWSLambda1
       {
       public class Function
       {
  
      /// &lt;summary&gt;
      /// A simple function that takes a string and does a ToUpper
      /// &lt;/summary&gt;
      /// &lt;param name="input"&gt;&lt;/param&gt;
      /// &lt;param name="context"&gt;&lt;/param&gt;
      /// &lt;returns&gt;&lt;/returns&gt;
      public string FunctionHandler(string input, ILambdaContext context)
      {
          var sqs = new AmazonSQSClient();
          System.Console.Write("sqs", sqs);
          var queueUrl = "myqueueUrl";
          var receiveMessageRequest = new ReceiveMessageRequest{ QueueUrl = queueUrl};
          var receiveMessageResponse = sqs.ReceiveMessageAsync(receiveMessageRequest);
          System.Console.Write("M", receiveMessageResponse);
              return "true";
  
      }
  }
  </code></pre>
  
  <p>}</p>