Hello Monks I am trying to write a simple CGI script using CGI::Application that shows the latest files on a remote server. I can do this via the command line with the following code:

use DBI;
use Net::SFTP::Foreign;
use Data::Dumper qw(Dumper);

my $dbh = DBI->connect('dbi:mysql:database=realtime;host=localhost','r
+oot','xxxxxxx');
my $sql = "select id,codename,full_name from stations";
my $sth = $dbh->prepare($sql);
$sth->execute();
my $rs = $sth->fetchrow_hashref();
$rs    = $sth->fetchall_arrayref( { id        => 1,
                                    full_name => 1,
                                    codename  => 1 } );

my ($sc,$mn,$hr,$md,$mo,$yr,$wd,$yd,$id) = localtime(time); $yr += 190
+0;

my $hostname     = 'xxx.xxx.xxx.xxx';
my $username     = 'xxxxx';
my $Dbase_search = '/data/archive/real-time/staging/radial';
my @latestfiles;

print "\nOPENING SFTP connection to $hostname as user $username ...\n\
+n";
my $sftp = Net::SFTP::Foreign->new( $hostname , user=>$username );

foreach my $station ( @{$rs} ) {

    my $Dsearch = $Dbase_search.'/'.$station->{codename}.'/'.$yr;
    print "Searching $Dsearch for files modified in the last 24 hours 
+... \n";
    my @files = $sftp->find( $Dsearch , wanted => sub{
                                 use Fcntl qw(S_ISREG);
                                 my $now            = time();
                                 my $yesterday      = $now-(24*3600);
                                 my (undef, $entry) = @_;
                                 ( ($entry->{a}->mtime < $now) and ($e
+ntry->{a}->mtime > $yesterday) and S_ISREG($entry->{a}->perm) )
                             } );

    push @latestfiles, $_->{filename} for $files[-1];
    print "Latest $station->{full_name} file: $_->{filename}\n" for $f
+iles[-1];

}

print "\nCLOSING SFTP connection\n\n";
$sftp->disconnect;
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HOWEVER, when I try implementing this in CGI::Application I get the following message:

There has been an error: Modification of non-creatable array value attempted, subscript -1 at /users/xxx/sites/simple_secure/realtime/simple_realtime.pm line 164.

I'm not quite sure how to proceed ...
Here's the relevant chunk of code in simple_realtime.pm that's failing on me:

    my $self        = shift;
    my $stations    = shift;
    my @latestfiles = [];

    # remote host
    my $hostname = 'xxx.xxx.xxx.xxx';
    my $username = 'xxxx';
    my $password = 'xxxxxxxx';
    my $Dbase    = '/data/archive/real-time/staging/radial';

    # time
    my ($sc,$mn,$hr,$md,$mo,$yr,$wd,$yd,$id) = localtime(time); $yr +=
+ 1900; $mo += 1;
    my $now = sprintf('%4d-%02d-%02d %02d:%02d:%02d',$yr,$mo,$md,$hr,$
+mn,$sc);

    # connect
    use Net::SFTP::Foreign;
    my $sftp = Net::SFTP::Foreign->new( $hostname , user => $username 
+, password => $password ) or fatal_error($!);

    # search
    foreach my $station ( @{$stations} ) {

        my $Dsearch = $Dbase.'/'. $station->{codename}.'/'.$yr;
        my @files   = $sftp->find( $Dsearch , wanted => sub{
                                       use Fcntl qw(S_ISREG);
                                       my $now            = time();
                                       my $yesterday      = $now-(24*3
+600);
                                       my (undef, $entry) = @_;
                                       ( ($entry->{a}->mtime < $now) a
+nd ($entry->{a}->mtime > $yesterday) and S_ISREG($entry->{a}->perm) )
                                   } );
        push @latestfiles, $_->{filename} for $files[-1];

    }

    $stations->{flatest} = \@latestfiles;

    my $template = $self->load_tmpl('show_radial_file_status.tmpl');
    $template->param( title    => "Latest Files on Simple Server",
                      now      => $now,
                      hostname => $hostname,
                      stations => $stations,
                    );

    $sftp->disconnect;
    return $template->output();
    #return @latestfiles;
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Further to this I don't in fact know if $stations->{flatest}=\@latestfiles; will work the way I'm intending it to -- i.e. put the latest files into stations hash when stations is created by:

sub _retrieve_station_list {

    my $self = shift;

    my $sql = "select id,codename,full_name from stations";

    $self->dbh->{PrintError} = 0;
    $self->dbh->{RaiseError} = 1;

    my $sth = $self->dbh->prepare($sql);
    $sth->execute();
    my $rs = $sth->fetchrow_hashref();
    $rs    = $sth->fetchall_arrayref( { id        => 1,
                                        full_name => 1,
                                        codename  => 1 } );
    return $rs;


}
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Any insight you might have I'm sure I'd benefit from. Thanks