Calling a Controller at server side

[flashyjunior]

Please I need some assistance calling HttpPost method in a controller class, I tried using JsonServiceClient, but I get an error message
System.Exception: 'One or more errors occurred. (An error occurred while sending the request.)'

var client = new JsonServiceClient(Option?.Value.SiteInternalUrl);
client.Post<ServiceResponse>("LeaveRequestEmail/SendEmail",
    new LeaveRequestModel
    {
        LeaveNumber = Row.Number,
        LeaveRequestStatus = (Int16)Row.LeaveRequestStatus,
        RequesterApprover = 1
        LeaveRequestRow = leaveinfo,
    });

This is the controller:

namespace CBL_ERP.Web.Modules.Leave.LeaveRequest
{
    [Route("LeaveRequestEmail/[action]")]
    public partial class LeaveRequestEmailController:Controller
    {
        public ITextLocalizer Localizer { get; }
        private readonly Common.SmtpSettings smtp;
        public LeaveRequestEmailController(ITextLocalizer localizer, IOptions<Common.SmtpSettings> smtp)
        {
            Localizer = localizer ?? throw new ArgumentNullException(nameof(localizer));
            this.smtp = (smtp ?? throw new ArgumentNullException(nameof(smtp))).Value;
        }

        [HttpPost, JsonRequest, IgnoreAntiforgeryToken]
        public Result<ServiceResponse> SendEmail(LeaveRequestModel request,
            [FromServices] IEmailSender emailSender,
            [FromServices] IOptions<EnvironmentSettings> options = null)
        {

[VictorTomaili]

Instead calling endpoint, you can create a service LeaveRequestEmailSender with interface ILeaveRequestEmailSender, then you can call it from your endpoint. And also you can inject this interface in any of your class in the project. Endpoints has HttpContext and requires some pipelines like authorization etc. Don't call endpoints in the projects unless strict requirements.

public Result<ServiceResponse> SendEmail(LeaveRequestModel request, 
    [FromServices] ILeaveRequestEmailSender leaveRequestEmailSender)
{...