title: Unable to resolve service for type IEmailSender while attempting to activate RegisterModel
body: <p>I'm using Identity and I have a problem that I make a new example project and with individual authentication and scaffold identity 
  InvalidOperationException: Unable to resolve service for type 'Microsoft.AspNetCore.Identity.UI.Services.IEmailSender' while attempting to activate 'MASQ.Areas.Identity.Pages.Account.RegisterModel'.</p>