Uses Spatie Missing Page Redirector behind the scenes.
composer require dewsign/nova-tool-redirects
For Excel downloads to work you need to have your storage linked.
If you are using Dependency Injection to inject your models into controller methods, for example, you will need to apply the ShouldRedirectMissingPages trait to the model. This trait overrides the resolveRouteBinding() method and checks for a redirect in the Spatie MissingPageRedirector package if the model is not found, before returning a 404.
Enjoy!