OK, hope I have not made a big mistake. I see this repository is 3 years old, so the course is not exactly current maybe? But anyway looks like this repository has no code in it, not good?

From module15-end.

I am trying to setup pre-rendering following the guidelines in this documentation article:

https://docs.microsoft.com/en-us/aspnet/core/blazor/components/prerendering-and-integration

Everything works except the custom AuthStateProvider in the course. Loading the token from LocalStorage will not work during pre-rendering:

    public override async Task<AuthenticationState> GetAuthenticationStateAsync()
    {
        var token = await _localStorage.GetItemAsync<string>("authToken");
        if (string.IsNullOrEmpty(token))
        {
            return _anonymous;
        }

        _httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("bearer", token);
        return new AuthenticationState(new ClaimsPrincipal(new ClaimsIdentity(JwtParser.ParseClaimsFromJwt(token), "jwtAuthType")));
    }

According to the Blazored LocalStorage documentation: Due to pre-rendering in Blazor Server you can't perform any JS interop until the OnAfterRender lifecycle method.

Wrapping this in a try / catch and returning an anonymous works. When the Blazor WebAssembly app is finally loaded the user will be logged in. But for a few seconds you get not authorized messages when you hit a page directly.

How can this custom AuthStateProvider be updated to work with pre-rendering on the server?

these are no any source code
then where is the code?