I assume this is a result of the site upgrade. In today's (April 1) newsletter none of the links are resolving correctly. Just a standard web page on the site with the text
Oops! That page can’t be found.
It looks like nothing was found at this location. Try the search below.
and a search bar. Examples:
Of course, if this is an April Fool joke, then I am gladly hooked, but just in case...