Why does apache httpd tell me that my name-based virtualhosts only works with SNI enabled browers (RFC 4366)
Solution 1:
It's because your VirtualHost directive doesn't match your ServerName directive and/or the CN of the certificate. All three need to be identical, unless you have a wildcard certificate where the non-wild portions must be identical.
Solution 2:
It's not an error, it's a warning message.
And you're getting it because 1) you've updated your Apache version and 2) you have 2 SSL VirtualHosts using the same exact IP address (as opposed to using 2 IPs).
Since you're sharing the IP, browsers without SNI support will just get the first website and never the second.