Problem! Working with application part from different projects with area logic. view not found – Asp.net

In Asp.net Core 5, my area is the same solution in a different project. I import the dlls with the application part, but. When I go to the index page in the area, it cannot find the view. It falls into the action in the controls, but cannot find the view. What can I do for solution?

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app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{controller=Home}/{action=Index}/{id?}");

                endpoints.MapAreaControllerRoute(
                    name: "default_area",
                    areaName:"Test",
                    pattern: "{area:exists}/{controller=Home}/{action=Index}/{id?}");
            });



[Area("Test")]
    public class HomeController : Controller
    {
        public IActionResult Index()
        {
            return View();
        }

        public IActionResult Privacy()
        {
            return View();
        }

        public IActionResult Testtt()
        {
            return View();
        }

        [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
        public IActionResult Error()
        {
            return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
        }
    }