Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Visiting https://meta.wordpress.stackexchange.com redirects here, but not before Chrome gives a full page SSL invalid warning
The new URL is wordpress.meta.stackexchange.com since the switch to SSL. So that link is simply wrong, and the certificate error expected.
If that link is still active somewhere on the site, it should be edited to the new version.