Connecting to SFTP Server 
unable to connect to remote host: the authenticity of the target host can't be established, the remote host public key is probably not present on the '~/.ssh/known_hosts' file

##</code><code>##


## doing a ssh-keygen

print "\n Disabling StrictHostKeyChecking \n";

my %opts =(password => $password);

 my  $ssh = Net::OpenSSH->new($hostName, %opts,
           master_opts => [-o => "StrictHostKeyChecking=no"]
           );


## Connecting to SFTP server
print "\n Connecting to SFTP Server \n";

my $sftp = Net::SFTP::Foreign->new(host => $url,
									user => $userName,
								  password => $password
	);
$sftp->die_on_error("unable to connect to remote host");