What Custom error pages do you have on your sites? Is it only 404 error page? Do you have other custom pages too? For example, 401, 402 and others. Thanks.
I make them all. If you already have a template for your site, why not make users feel more at home while they're lost.
I have on all of my websites 403 Forbidden (You have requested to view a web page or directory to which you are not allowed) 404 Not Found (The web page you requested cannot be found on the web server) 500 Internal Error (There’s something wrong on the web server)