I’m getting the following error about 100 times out of every 1000 calls
System.Threading.Tasks.TaskCanceledException: A task was canceled. at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.Extensions.Http.Logging.LoggingHttpMessageHandler.<<SendCoreAsync>g__Core|5_0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.Extensions.Http.Logging.LoggingScopeHttpMessageHandler.<<SendCoreAsync>g__Core|5_0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Net.Http.HttpClient.<FinishSendAsyncBuffered>d__58.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter 1.GetResult() at AirlineConnector.OmanAirways.Helpers.Helper.<ProviderCallAsync>d__12.MoveNext()A task was canceled.- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.Extensions.Http.Logging.LoggingHttpMessageHandler.<<SendCoreAsync>g__Core|5_0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.Extensions.Http.Logging.LoggingScopeHttpMessageHandler.<<SendCoreAsync>g__Core|5_0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Net.Http.HttpClient.<FinishSendAsyncBuffered>d__58.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter 1.GetResult() at AirlineConnector.OmanAirways.Helpers.Helper.<ProviderCallAsync>d__12.MoveNext()

Following is my code.

We are calling this ‘APICallAsync()’ method in multiple places in my project.
Why I’m getting this error?

using System.Linq;
using System.Net;
using System.Net.Http;
using Microsoft.Extensions.DependencyInjection;
using System.Text;

namespace Helpers
{
    public class Helper 
    {
        private static readonly Lazy<IHttpClientFactory> httpClientFactoryLazy = new Lazy<IHttpClientFactory>(() =>
        {
            var services = new ServiceCollection();
            services.AddHttpClient("HttpClientFactory", client =>
            {
                client.Timeout = TimeSpan.FromSeconds(15);
            })
              .ConfigurePrimaryHttpMessageHandler(() =>
              {
                  var handler = new HttpClientHandler();
                  handler.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
                  return handler;
              });
            var serviceProvider = services.BuildServiceProvider();
            return serviceProvider.GetRequiredService<IHttpClientFactory>();
        });

        private static IHttpClientFactory httpClientFactory
        {
            get
            {
                return httpClientFactoryLazy.Value;
            }
        }
        public async Task<string> APICallAsync(string remoteRequest, string serviceURL, string ActionURL)
        {
            var rawResponse = "";
            try
            {
                HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, serviceURL);
                request.Content = new StringContent(remoteRequest, Encoding.UTF8, "text/xml");
                request.Headers.Add("Accept-Encoding", "gzip, deflate");
                request.Headers.Add("SOAPAction", ActionURL);

                ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12 | System.Net.SecurityProtocolType.Tls11 | System.Net.SecurityProtocolType.Tls;
              
                var _httpClient = httpClientFactory.CreateClient("HttpClientFactory");

                HttpResponseMessage response = await _httpClient.SendAsync(request);
                rawResponse = await response?.Content?.ReadAsStringAsync();
            }
            catch (Exception ex)
            {
            }
            return rawResponse;
        }
    }

We are calling this ‘APICallAsync()’ method in multiple places.
Why I’m getting this error?