Moto hash error when using S3

md5.py

import hashlib

def go():
    md5 = hashlib.md5()
    contents = open('c:\\windows-version.txt').read()
    encoded = contents.encode("utf-8")
    md5.update(encoded)
    hash_value = md5.hexdigest()
    return hash_value

print('"{0}"'.format(go()))

packages.config

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="AWSSDK.Core" version="3.3.17.9" targetFramework="net461" />
  <package id="AWSSDK.S3" version="3.3.11" targetFramework="net461" />
</packages>

Program.cs

using System;
using System.IO;
using System.Net.Http;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;
using Amazon.S3;
using Amazon.S3.Model;

namespace moto_test
{
    class Program
    {
        static void Main(string[] args)
        {
            TestClientAsync().GetAwaiter().GetResult();
        }

        static async Task TestClientAsync()
        {
            using (var md5 = new MD5CryptoServiceProvider())
            {
                var contents = File.ReadAllText("c:\\windows-version.txt");
                var encoded = Encoding.UTF8.GetBytes(contents);

                var hash = md5.ComputeHash(encoded);
                var etag = BitConverter.ToString(hash).Replace("-", string.Empty);

                Console.WriteLine($".NET MD5: \"{etag}\"");
            }

            var client = new AmazonS3Client(new AmazonS3Config
            {
                ServiceURL = "http://localhost:5000"
            });

            await client.PutBucketAsync("MotoTest");

            var bucketsResponse = await client.ListBucketsAsync();

            foreach (var bucket in bucketsResponse.Buckets)
            {
                Console.WriteLine(bucket.BucketName);
            }

            try
            {
                var putResponse = await client.PutObjectAsync(new PutObjectRequest
                {
                    BucketName = "MotoTest",
                    Key = "my-file.txt",
                    FilePath = "c:\\windows-version.txt"
                });
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }

            var getResponse = await client.GetObjectAsync(new GetObjectRequest
            {
                BucketName = "MotoTest",
                Key = "my-file.txt"
            });

            Console.WriteLine($"Moto MD5: {getResponse.ETag}");

            Console.ReadKey();
        }
    }
}

windows-version.txt

Microsoft Windows 7 Professional