HttpClient.PostAsJsonAsync() request not reaching the endpoint destination

When I take user data and pass it to a command so I can pass it to the endpoint (controller method), the response doesn't even point me in the direction of the specified endpoint. I'm using Blazor and.net 8 and I want to create a new reservation. It also directs me when I try to access the endpoint without the command.

    public async Task<Result<ReservationDto>?> CreateReservationsAsync(string name, string surname, DateOnly birthday, string ssn)    {        var reservationCommand = new CreateReservationCommand        {            Name = name,            Surname = surname,            Birthday = birthday,            Ssn = ssn        };        var response = await _httpClient.PostAsJsonAsync("api/admin/Reservation/create", reservationCommand);        return await response.Content.ReadFromJsonAsync<Result<ReservationDto>>();    }

  [HttpPost("create")]  public async Task<IActionResult> CreateReservationAsync([FromBody] CreateReservationCommand command)  {      var result = await Mediator?.Send(command)!;      if (result.Failed)      {          return BadRequest(result);      }      return Ok(result.Value);  }

I am expectin to direct me to the specified endpoind, with the command provided from front end.

Also, when I change the controller method to this, it works, but i want to use the above type of method:

 [HttpPost("create")] public async Task<IActionResult> CreateReservationAsync() {     var requestBody = await new StreamReader(Request.Body).ReadToEndAsync();     var command = JsonConvert.DeserializeObject<CreateReservationCommand>(requestBody);     var result = await Mediator?.Send(command)!;     if (result.Failed)     {         return BadRequest(result);     }     return Ok(result.Value); }