My https site cannot be displayed in Safari with "nsposixerrordomain:100" error. I'm running nginx 1.13.3 and Ubuntu 17.04. The site is displayed fine in other browsers and the SSL test also completes fine...
Apparently Safari doesn’t like multiple line HTTP headers under HTTP/2.
If above config has been copy and pasted right, the your HSTS header looks wrong since it opens quotes but doesn’t close it until multiple lines ...