Internal SectionId assignment conflict exception I can't seem to figure out

[Woodman9]

Guys I'm putting security into my Asp.Net Core 9.0 Blazor FluentUI Aspire web app and I'm getting an error launching the web app after I configure the Routes.razor for security support. I'm going to give you the actual error and then the before file that works and the after file that breaks. As far as I can see I've got everything setup as it should be. Any help and/or ideas very much appreciated. I'm still deep diving a few books to see if anything will help. Thanks everyone!

Error: InvalidOperationException: There is already a subscriber to the content with the given section ID 'System.Object'. (Microsoft.AspNetCore.Components.Sections.SectionRegistry.Subscribe(object identifier, SectionOutlet subscriber).

Before Routes.razor config that works:

<Router AppAssembly="@typeof(Program).Assembly">
    <Found Context="routeData">
        <RouteView RouteData="@routeData" DefaultLayout="@typeof(Layout.GuestLayout)" />
        <FocusOnNavigate RouteData="@routeData" Selector="h1" />
    </Found>
</Router>

New Routes.razor config that causes the error:

<CascadingAuthenticationState>
    <Router AppAssembly="@typeof(Program).Assembly">
        <Found Context="routeData">
            <AuthorizeRouteView RouteData="@routeData" DefaultLayout="@typeof(GuestLayout)">
                <NotAuthorized>
                    <RedirectToGuestHome />
                </NotAuthorized>
            </AuthorizeRouteView>
        </Found>
        <NotFound>
            <LayoutView Layout="@typeof(GuestLayout)">
                <p>Sorry, there's nothing at this address.</p>
            </LayoutView>
        </NotFound>
    </Router>
</CascadingAuthenticationState>

<HeadOutlet />

[Woodman9]

Looks like it removed my code examples when I submitted the issue. I can provide it somehow. Basically I'm using both the CascadingAuthenticationState and the AuthorizeRouteView in my new config

[vnbaaij]

Hi,

This seems to be a general Blazor issue and not related to this library. Please create an issue in the dotnet/aspnetcore repo.

PS, your code is in the post. You just needed to put 3 ` at the start and end to mark it as a code block

[vnbaaij]

Ps2 I think you just need to remove the HeadOutlet. It should not be in the router file.

[Woodman9]

That did fix it! Thank you so much. So much for AI coding. LOL The AI assistance I was using put that in there. AI has a ways to go. Thank you!