new ubuntu 19.10 installation, perl 5.28.1 :
`Mojolicious::Plugin::Web::Auth` depends on `Net::SSLeay`. Unfortunately, Net::SSLeay is completely hosed. (I have libssl-dev, openssh-client, and openssh-server all installed,)
The solution was also to install `apt install libz-dev`. There are still a lot of warnings, but then it works.