Centreon API v21.10 .net core

Hello,

I’m using Centreon Api v2 for an application .net Core C#, i have a probleme when use async method like Get Host or AcknowledgementsPOST4Async for service and i get response : Internal server error 500.

the login method works good.

the code :

var task = Task.Run(async () => await CentreonApi.LoginAsync(authenticationRequest,cancellationToken));
                    var resultAsync = task.Result;
                    
                    var task1 = Task.Run(async () =>
                    await CentreonApi.Hosts2Async(177, cancellationToken);
                    var resultAsync1 = task1.Result;
                  var taskAcknowledgement = Task.Run(async() =>  CentreonApi.AcknowledgementsPOST4Async(177, 1193, CommentNotif));
                    var resultAsync1 =  taskAcknowledgement.Result;

i miss somthing in my code ?