Comment 4 for bug 1712696

@Thomas - I beg your pardon I don't know why no one got to this yet :-/

@Kosmonaut - the reported error can only happen on install/upgrade - I'd ask you to file your issue as a new bug to take look at.

About the issue from the log:
Aug 23 23:52:24 thomas-ThinkPad-T430 nginx[20166]: nginx: [emerg] socket() [::]:80 failed (97: Address family not supported by protocol)
Aug 23 23:52:24 thomas-ThinkPad-T430 nginx[20166]: nginx: configuration file /etc/nginx/nginx.conf test failed
Aug 23 23:52:24 thomas-ThinkPad-T430 systemd[1]: nginx.service: Control process exited, code=exited status=1
Aug 23 23:52:24 thomas-ThinkPad-T430 systemd[1]: Failed to start A high performance web server and a reverse proxy server.

Could that be a ipv6 setup in the conf but no ipv6 address at all?
I'd have thought it would just not bind to any, but please take a look related to this error message what in your config might be broken as reported by the conf check.