is it possible to have a page for generic error instead of a simple text message shown as a standard WordPress-error?.
I have change all other messages to page that I’ve created for that, so the layout doesn’t break.
In the case that there is an error e.g. a already registered subscriber tries to subcribe again the “ugly” message is shown.
To avoid it I want to show it on a special page like the other message, so it looks like the rest of the website.
I believe there is a hook.
Maybe important: I am a PHP-developer, so feel free to post code examples …