Problem

For users who have AT&T as their ISP, when an invalid/outdated URL is accessed from inside the IDE(could be any plugin), the AT&T DNS is unable to resolve the URL and therefore does their default routing to nextplaysearch.com, of which the certificate has expired. Then the users would see below warning:

Workaround

For most of the cases, keeping all custom plugins up to date could fix it. However, if the issue persists anyway, change the DNS on the computer to point to another one, for example, Google DNS.