yann.lecun.com website is probably not valid
The website that you mentioned about the founding father of CNN is not opening. Is it a correct URL?
The site http://yann.lecun.com/ is opening for me.
However, since it uses the 'http' protocol instead of the 'https', your browser may be blocking access to it as it flags it as 'insecure'. You may want to check your browser settings/allow access to the site if prompted.
Nikola Pulev, 365 Team