ls -l /var/lib/dpkg/info | grep -i libssl
When you see both 1.1.0 and 1.1.1, you need to do the following :
sudo mv /var/lib/dpkg/info/libssl* /tmp
sudo apt-get update
sudo apt-get -y dist-upgrade
sudo apt-get -y autoclean
sudo apt-get -y autoremove
The problem should be solved.
That's all! See you.
Since Ubuntu has fixed the problem recently, you need to do the following to fix the missing libssl1.1.0.
sudo apt-get --reinstall -y libssl1.1.0