Swagger is not Working Asp.net Core how to open swagger ui

This is my Startup.cs file

This is my ConfigureService method in Startup.cs. I have modified it exactly according to documentation, but it's not working. I have removed the launch Url, so it's just going on the port and I have not set any routing.

  public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc();
            services.AddControllers();
            services.ConnectionToACQEs(Configuration);
            services.AddAutoMapper(typeof(Startup));
            // Register the Swagger generator, defining 1 or more Swagger documents
            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new OpenApiInfo
                {
                    Version = "v1",
                    Title = "ToDo API",
                    Description = "A simple example ASP.NET Core Web API",
                    TermsOfService = new Uri("https://example.com/terms"),
                    Contact = new OpenApiContact
                    {
                        Name = "Nicky Liu",
                        Email = "nicky@zedotech.com",
                        Url = new Uri("https://www.zedotech.com"),
                    },
                    License = new OpenApiLicense
                    {
                        Name = "Use under LICX",
                        Url = new Uri("https://example.com/license"),
                    }
                });
            });
        }
    

This is my Configure method:

     public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
       {
           //if (env.IsDevelopment())
           //{
           //    app.UseDeveloperExceptionPage();
           //}


           /// Enable middleware to serve generated Swagger as a JSON endpoint.
           app.UseSwagger();
           // Enable middleware to serve swagger-ui (HTML, JS, CSS, etc.),
           // specifying the Swagger JSON endpoint.
           app.UseSwaggerUI(c =>
           {
               c.SwaggerEndpoint("/swagger/v1/swagger.json", "My API V1");
           });
           //app.UseHttpsRedirection();

           app.UseRouting();

           //app.UseAuthorization();

           app.UseEndpoints(endpoints =>
           {
               endpoints.MapControllers();
           });



       }