Getting error while upgrading ConfD 6.5.2 to ConfD 6.7.3

[mnovak]

Look strange as both version should need libcrypto.so.1.0.0

Not sure if this is the same issue, but you may check:

SSH Access in Ubuntu 19.04

If you experience CLI or netconf-console SSH issue after installation of ConfD in Ubuntu 19.04, you can use solution described here: Go to $CONFD_DIR/etc/confd/ssh and issue command ssh-keygen -v -f ssh_host_rsa_key -N "" -t rsa -m pem