The "Remote Host Identification Has Changed" error message is usually seen when connecting to a remote host using the Secure Shell (SSH) protocol. This error occurs when the remote host's SSH host key has changed since the last time you connected to it.
The SSH host key is a unique identifier for the remote host, and it is used to authenticate the host to the client. When you connect to a remote host for the first time, the client stores the host's SSH host key in its known hosts file. If the host's SSH host key changes, the client will not be able to authenticate the host, and you will see the "Remote Host Identification Has Changed" error message.
To fix this error, you need to update the client's known hosts file with the new SSH host key for the remote host. You can do this by connecting to the remote host and manually verifying the new SSH host key.
For example, to connect to the remote host and manually verify the new SSH host key, you can use the following command:
ssh -o StrictHostKeyChecking=ask user@remote_host
This will prompt you to verify the new SSH host key for the remote host before connecting. You can then choose whether to accept the new SSH host key or not.
If you decide to accept the new SSH host key, it will be added to your client's known hosts file, and the "Remote Host Identification Has Changed" error will be resolved.
You can find more information about the SSH host key and the known hosts file in the SSH documentation.