Hello,

I have a page in my Umbraco site that uses the standard RenderController and I can access it with the path /500

Now I want to setup the Exception Hanlder middleware to show this page in the event of an internal server error.

So I add this to my startup.cs:

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        app.UseExceptionHandler("/500");
        ...

Then I throw a new exception on my homepage controller to test this out. In the console, I get an error saying the Exception handler returned a 404 but this is not allowed.

We can get around this by allowing 404s on the exception handler with this:

            app.UseExceptionHandler(
                new ExceptionHandlerOptions()
                {
                    AllowStatusCode404Response = true,
                   ExceptionHandlingPath = "/500",
               }
            );

But then I get the blank browser default 404 error page. Because the issue is that it can not find my page so it can't display it.

If I set the Exception Handling Path to a static .HTML file or a SurfaceController or a custom controller with a custom route, it works.

It just does not work when you point to a RenderController.

I feel like this is something it should be able to handle.

Any advice appreciated!