I'm following the installation instructions here: https://gluu.org/docs/gluu-server/installation-guide/install-ubuntu/ **First challenge:** curl https://repo.gluu.org/ubuntu/gluu-apt.key | apt-key add - **Yields:** curl: (77) error setting certificate verify locations: CAfile: /etc/ssl/certs/ca-certificates.crt CApath: /etc/ssl/certs gpg: no valid OpenPGP data found. **Hack?** curl -k https://repo.gluu.org/ubuntu/gluu-apt.key | apt-key add - **Next challenge:** apt-get update **Yields:** Err:5 https://repo.gluu.org/ubuntu bionic Release Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown. Could not handshake: Error in the certificate verification. [IP: 165.227.82.89 443] Get:6 http://archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB] Reading package lists... W: https://repo.gluu.org/ubuntu/dists/bionic/InRelease: No system certificates available. Try installing ca-certificates. W: https://repo.gluu.org/ubuntu/dists/bionic/Release: No system certificates available. Try installing ca-certificates. E: The repository 'https://repo.gluu.org/ubuntu bionic Release' does not have a Release file. And that's how far I get. I've tried changing over to http from https to no avail... Not sure what to try next...