Ubuntu 23.10 Failed to start ssh.service - OpenBSD Secure Shell Server

Question: How do you solve "Ubuntu 23.10 Failed to start ssh.service - OpenBSD Secure Shell Server" error?

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Answer: This means that the Host has changed IP address hashed into the ssh Keys. In order to resolve this issue, you need to reginerate the ssh private keys on the server by issueing this command.

sudo/usr/bin/ssh-keygen -A