While I was trying to start nginx after some reconfigurations… i was getting

* Starting nginx nginx
nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)
nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)
nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)
nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)
nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)

Don’t know HOW/WHY I had apache running on 80…
I had to stop it and later uninstall it…

sudo apachectl stop