Download multiple files from SFTP using perl Net::SFTP::Foreign - perl

Question

I am using the below code to download files from SFTP and I am getting error message after one file download. Then I am rerunning the program and then it downloads only one file again and when trying to download the next file in the array it get failed. I couldn't understand the reasons for this failure and kindly review the below code and share opinions.
#!/usr/bin/perl
use strict;
use Net::SFTP::Foreign::Constants qw(:error :status);
use Net::SFTP::Foreign;
use Net::SFTP::Foreign::Attributes;
my $SFTP_CON=Net::SFTP::Foreign->new("sftpserver.test.com",user=>"testuser",password=>"pass");
my #SFTP_Files=('/test/1.txt','/test/2.txt','/test/3.txt');
my $root_dir='/test/';
$local_dir='/u/test/';
foreach my $file_to_dwn(#SFTP_Files){
my $file_to=$file_to_dwn;
$file_to=~s/$root_dir/$local_dir/igs;
unless($SFTP_CON->get("$file_to_dwn","$file_to")){
if (($SFTP_CON->error == SFTP_ERR_REMOTE_STAT_FAILED or
$SFTP_CON->error == SFTP_ERR_REMOTE_OPEN_FAILED) and
$SFTP_CON->status == SSH2_FX_NO_SUCH_FILE) {
print "Remote file does not exist!";
exit;
}
else {
print "Transfer Failed";
exit;
}
print $SFTP_CON->error."\n";
exit;
}
}
I am getting "Transfer Failed", when the program tries to download the one after another (second file download).
Please do needful.