We'll create fresh WordPress site with Custom Error Pages installed. You have 20 minutes to test the plugin after that site we'll be deleted.
WordPress offers inbuilt support for custom 404 pages on all themes. But what about custom pages for other common errors like 401 and 403? You end up seeing a bland error page of the Web Server.
With this plugin you can easily create custom 401 and 403 error pages with any theme without writing a single line of code!!! And the best part is that you set it and forget it. Yes, you don’t have to do any changes even if you change themes. The heading and text you want on 401 and 403 error pages are displayed on the currently active theme.