Hello, macOS Sierra!
macOS… that name… so… long… ago…
It has been, what?, 11 years? 12? … System 9, that was the last OS to be called macOS. The name change does not change anything regarding the update cycle, although on one of my macs, the upgrade went horrifically bad! I ended up rebooting in Recovery mode and installing macOS from there.
For getting the development enviroment back up, not much to be done!
Apache could not find the default server certificates in
sudo nano /etc/apache2/extra/httpd-ssl.conf
sudo apachectl restart
As always; feel free to comment or ask questions :)