Add all the required services by calling IServiceCollection.AddAuthorization inside the call to ConfigureServices

System.InvalidOperationException HResult=0x80131509 Message=Unable to find the required services. Please add all the required services by calling 'IServiceCollection.AddAuthorization' inside the call to 'ConfigureServices(...)' in the application startup code. Source=Microsoft.AspNetCore.Authorization.Policy StackTrace: at Microsoft.AspNetCore.Builder.AuthorizationAppBuilderExtensions.VerifyServicesRegistered(IApplicationBuilder app) at Microsoft.AspNetCore.Builder.AuthorizationAppBuilderExtensions.UseAuthorization(IApplicationBuilder app) at AMS.Startup.Configure(IApplicationBuilder app, IWebHostEnvironment env) in C:\Users\User-Pc\Desktop\AMS\AMS\Startup.cs:line 67 at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) at Microsoft.AspNetCore.Hosting.ConfigureBuilder.Invoke(Object instance, IApplicationBuilder builder) at Microsoft.AspNetCore.Hosting.ConfigureBuilder.<>c__DisplayClass4_0.b__0(IApplicationBuilder builder) at Microsoft.AspNetCore.Hosting.GenericWebHostBuilder.<>c__DisplayClass15_0.b__1(IApplicationBuilder app) at Microsoft.AspNetCore.Server.IIS.Core.IISServerSetupFilter.<>c__DisplayClass2_0.b__0(IApplicationBuilder app) at Microsoft.AspNetCore.HostFilteringStartupFilter.<>c__DisplayClass0_0.b__0(IApplicationBuilder app) at Microsoft.AspNetCore.Hosting.GenericWebHostService.d__31.MoveNext()

Answer

Option 1.

Add this in your service as given below

  public void ConfigureServices(IServiceCollection services)
        {
            services.AddControllersWithViews();
            services.AddIdentity<IdentityUser, IdentityRole>(options =>
            {
                options.Password.RequiredLength = 1;
                options.Password.RequireLowercase = false;
                options.Password.RequireUppercase = false;
                options.Password.RequireNonAlphanumeric = false;
                options.Password.RequireDigit = false;
            })
             .AddEntityFrameworkStores<AMSContext>()
             .AddDefaultTokenProviders();
        }

Hope this will working fine in your project.

Option 2.

The exception message clearly indicates that your should invoke services.AddHealthChecks() inside ConfigureServices(IServiceCollection services)

void ConfigureServices(IServiceCollection services) {
    // something here
    services.AddHealthChecks();
    //something here
}

For more details: https://docs.microsoft.com/en-us/aspnet/core/host-and-deploy/health-checks?view=aspnetcore-5.0