A lot of sites you don't see a 403/404 page often, so they can be ugly, but every time my login expires, I get your page. Ok that's understandable. but there's no links on that page. There's no way to log back in, there's no way to return to the homepage, you're stuck there.
I obviously know how to edit the URL and get back there but not everyone does and so the average consumer's only response is to close the tab and try again. That is a nightmare in customer retention.
Can you at least put a link back to the homepage on there?