Cannot access a closed Stream / Reading is not allowed after reader was completed

Имею такой сервис.

При ее вызове есть 4 исхода

1. Сервис отрабатывает нормально

2. Получаю ошибку - Cannot access a closed Stream.

3. Получаю ошибку - Reading is not allowed after reader was completed.

4. Получаю ошибку - Cannot access a disposed object. Object name: 'HttpRequestStream'.

    public async void InputDataValidation2()
           {
               var charset = "utf-8";
               var logFile = $"{Guid.NewGuid().ToString("N")}.txt";
   
               var outerRequest = HttpContext.Request;
               var outerResponse = HttpContext.Response;
   
               try
               {   
                   outerRequest.Body.Seek(0, SeekOrigin.Begin);
                   var bytes = new Memory<byte>(new byte[outerRequest.ContentLength ?? 0]);
                   await outerRequest.BodyReader.AsStream().ReadAsync(bytes);
                   var body = Encoding.GetEncoding(charset).GetString(bytes.ToArray());
   
                   log(body, logFile);
   
                   var jsonRequest = JsonConvert.DeserializeObject<InputJsonValidationRequest>(body);
   
                   var result = InputDataValidation(jsonRequest);
   
                   body = JsonConvert.SerializeObject(result);
   
                   log(body, logFile);
   
                   bytes = new Memory<byte>(Encoding.GetEncoding(charset).GetBytes(body));
   
                   outerResponse.ContentType = "application/json; charset=utf-8";
   
                   await outerResponse.BodyWriter.WriteAsync(bytes);
               }
               catch (Exception e)
               {
                   log(e.Message, logFile);
   
                   var body = JsonConvert.SerializeObject(new InputJsonValidationResponse {
                       resultCode = -1,
                       resultMessage = e.Message
                   });
   
                   var bytes = new Memory<byte>(Encoding.GetEncoding(charset).GetBytes(body));
                   outerResponse.StatusCode = 500;
                   await outerResponse.BodyWriter.WriteAsync(bytes);
               }
           }
   

В чем может быть дело?

  string log(string msg, string fileName = null) {
            if (null == fileName) fileName = $"{Guid.NewGuid().ToString("N")}.txt";
            using (StreamWriter sr = new StreamWriter($"{logDirectory}\\{fileName}", true))
            {
                sr.WriteLine(msg);
                sr.Close();
            }
            return fileName;
        }