Question Problem using Net::SSH2 module

[flora_21]

#!usr/bin/perl

use warnings;

use Net::SSH2;
use Net::SSH2::Channel;
use Data::Dumper;
my $ssh2 = Net::SSH2->new();
$ssh2->connect('135.24.224.167') or die $!;
print Dumper $ssh2;
my $key = "C:\\private-k\\id_rsa";
print "Not Found!\n" if (! -e $key);
#$ssh2->auth_publickey("root","password","C:\\private-k\\id_rsa");
print $! unless ($ssh2->auth_publickey("root","password","C:\\private-k\\id_rsa") );
$ssh2->auth_ok();
my $chan = $ssh2->channel() or die "Channel failed".$!;
$ssh2->exec("sasaddr");
while (<$chan>){ print };

I am trying to execute this code and getting this error :

Channel failedResource temporarily unavailable at ssh.pl line 20.
No such file or directory

Please help in this issue. Am I doing something wrong?