Something is already listening on port 80, probably anotherweb server. Shut off that process and you should be able to continue with the installation.
** Changed in: nginx (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1789098 Title: package nginx-core 1.14.0-0ubuntu1 failed to install/upgrade: installed nginx-core package post-installation script subprocess returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nginx/+bug/1789098/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs