You missed an i in the URL. /fmi/webd
If you want to use certificate, the URL should start with https: and use FQDN instead of "localhost".
This did work with the "i" added, but there remains one question: how is it that it worked before, as I was picking the URL from my browser history. I can't replicated now, so that question remains unanswered. Thanks.
Regarding the certificate issue; yes, I do realize the certificate won't work unless the URL matches. I was waiting to see if I'd be able to actually open the site before engaging with the certificate.