Why MapFallbackToController is not working? asp.net core 3.1.1 + angular

I finished my app and i want to publish it into web. Working on core 3.1.1 + angular2.

I created Fallback controller for routes.

After i'm refeshing page i got HTTP 401 Unauthorized.

I chcecked into my local storage and it's clear when it shouldn't be..

I have problem when i refresh page in response i got HTTP 401 unauthorized.. (and my local storage is clear, when it shouldn't) It's very strange.. Everything worked perfect until moved angular files(wwwroot) into API proj.

I have no ideas.

My code of fallback:

   public class Fallback : Controller
    {
        public IActionResult Index()
        {
            return PhysicalFile(Path.Combine(Directory.GetCurrentDirectory(), "wwwroot", "index.html"), "text/HTML");
        }
    }

Startup.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using AutoMapper;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Diagnostics;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.IdentityModel.Tokens;
using RecipesApp.API.Controllers.Models.Data;
using RecipesApp.API.Data;
using RecipesApp.API.Helpers;

namespace RecipesApp.API
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        
        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddDbContext<DataContext>( x=> x.UseSqlite(Configuration.GetConnectionString("DefaultConnection")));
            services.AddControllers().AddNewtonsoftJson(opt => {
                opt.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore;
            });

            services.AddCors();
            services.Configure<CloudinarySettings>(Configuration.GetSection("CloudinarySettings"));
            services.AddAutoMapper(typeof(RecipesRepository).Assembly);
            services.AddScoped<IAuthRepository, AuthRepository>();
            services.AddScoped<IUserRepository, UserRepository>();
            services.AddScoped<IRecipesRepository, RecipesRepository>();
            services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
            .AddJwtBearer(options => {
                options.TokenValidationParameters = new TokenValidationParameters
                {
                    ValidateIssuerSigningKey = true,
                    IssuerSigningKey = new SymmetricSecurityKey(Encoding.ASCII
                    .GetBytes(Configuration
                    .GetSection("AppSettings:Token").Value)),
                    ValidateIssuer = false,
                    ValidateAudience = false
                };
            });
            services.AddScoped<LogUserActivity>();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else 
            {
                app.UseExceptionHandler(builder => 
                {
                    builder.Run(async context => 
                    {
                        context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;

                        var error = context.Features.Get<IExceptionHandlerFeature>();
                        if (error != null)
                        {
                            context.Response.AddApplicationError(error.Error.Message);
                            await context.Response.WriteAsync(error.Error.Message);
                        }
                    });
                });
            }

            // app.UseHttpsRedirection();

            
           
            app.UseRouting();

            app.UseAuthentication();
            app.UseAuthorization();

            app.UseCors(x => x.AllowAnyOrigin().AllowAnyMethod().AllowAnyHeader());

            app.UseDefaultFiles();
            app.UseStaticFiles();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
                endpoints.MapFallbackToController("Index", "Fallback");
            });
        }
    }
}