The login and register page with .net core authentication seem to be without css and bootstrap.

I get errors in console

failed to load resource: the server responded with a status of 404 () bootstrap.css
failed to load resource: the server responded with a status of 404 () site.js
failed to load resource: the server responded with a status of 404 () jquery.js 
...etc

In Pages\Shared\_Layout.cshtml 

I see the following code

<environment include="Development">
        <link rel="stylesheet" href="~/Identity/lib/bootstrap/dist/css/bootstrap.css" />
        <link rel="stylesheet" href="~/Identity/css/site.css" />
    </environment>
    <environment exclude="Development">
        <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.0/dist/css/bootstrap.min.css"
              integrity="sha384-KyZXEAg3QhqLMpG8r+8fhAXLRk2vvoC2f3B09zVXn8CA5QIVfZOJ3BCsw2P0p/We" crossorigin="anonymous"
              asp-fallback-href="~/Identity/lib/bootstrap/dist/css/bootstrap.min.css"
              asp-fallback-test-class="sr-only" asp-fallback-test-property="position" asp-fallback-test-value="absolute" />
        <link rel="stylesheet" href="~/Identity/css/site.css" asp-append-version="true" />
    </environment>
    ...
    ...
    
    <environment include="Development">
        <script src="~/Identity/lib/jquery/dist/jquery.js"></script>
        <script src="~/Identity/lib/bootstrap/dist/js/bootstrap.bundle.js"></script>
        <script src="~/Identity/js/site.js" asp-append-version="true"></script>
    </environment>
    <environment exclude="Development">
        <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"
                asp-fallback-src="~/Identity/lib/jquery/dist/jquery.min.js"
                asp-fallback-test="window.jQuery"
                crossorigin="anonymous"
                integrity="sha384-ZvpUoO/+PpLXR1lu4jmpXWu80pZlYUAfxl5NsBMWOEPSjUn/6Z/hRTt8+pR6L4N2">
        </script>
        <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.0/dist/js/bootstrap.bundle.min.js"
                asp-fallback-src="~/Identity/lib/bootstrap/dist/js/bootstrap.bundle.min.js"
                asp-fallback-test="window.jQuery && window.jQuery.fn && window.jQuery.fn.modal"
                crossorigin="anonymous"
                integrity="sha384-U1DAWAznBHeqEIlVSCgzq+c9gqGAJn5c/t99JyeKa9xxaYpSvHU5awsuZVVFIhvj">
        </script>
        <script src="~/Identity/js/site.js" asp-append-version="true"></script>
    </environment>   
    

But there is no lib or css folder in Identity folder.
Any idea about that?