Digging around further in your Dpkg History that was attached here, it looks like you have Apache installed. Nginx won't start if port 80 is bound to, but without the additional bug information I can't determine if that's the issue (though it's likely one of the main culprits)
-- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to nginx in Ubuntu. https://bugs.launchpad.net/bugs/1539316 Title: package nginx-core (not installed) failed to install/upgrade: il sottoprocesso installato script di post-installation ha restituito lo stato di errore 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nginx/+bug/1539316/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
