Hi John / David,
I’m sorry to hear you’re having trouble. It sounds like there’s a faulty web link on some page of the site, but I need a bit more information to trace exactly where it is, though. Can you let me know exactly what you’re clicking on to get this error message? Can you give me the full web address of the page with the link that’s producing this error? Alternatively a screenshot (including the web address bar at the top of your browser) would also give me what I need.