Log Entry : 12/08/2022 11:13:00 _______________Message__________________ Request failed with status code NotAcceptable _______________Message__________________ . Error Message: at RestSharp.RestClient.ExecuteAsync(RestRequest request, CancellationToken cancellationToken) at RestSharp.RestClientExtensions.PostAsync(RestClient client, RestRequest request, CancellationToken cancellationToken) at SmartTrip.WebUtility.Services.Payment.PaymentGatewayHelper.GetAccessToken() in D:\Projects\SmartTrip\SmartTrip.WebUtility\Services\Payment\PaymentGatewayHelper.cs:line 119 at SmartTrip.WebUtility.Services.Payment.PaymentGatewayHelper.CreateOrder(ApplicationCheckoutModel checkoutModel) in D:\Projects\SmartTrip\SmartTrip.WebUtility\Services\Payment\PaymentGatewayHelper.cs:line 31 ________________________________________________ Log Entry : 12/08/2022 12:05:35 _______________Message__________________ Misused header name, 'Content-Type'. Make sure request headers are used with HttpRequestMessage, response headers with HttpResponseMessage, and content headers with HttpContent objects. _______________Message__________________ . Error Message: at System.Net.Http.Headers.HttpHeaders.GetHeaderDescriptor(String name) at System.Net.Http.Headers.HttpHeaders.Add(String name, String value) at SmartTrip.WebUtility.Services.Payment.PaymentGatewayHelper.CreateOrder(ApplicationCheckoutModel checkoutModel) in D:\Projects\SmartTrip\SmartTrip.WebUtility\Services\Payment\PaymentGatewayHelper.cs:line 40 ________________________________________________