Used WWW:Mechanize to login and download a file in perl script but cannot get into the actual page content

I am trying to login to the site using Mechanize in Perl script. It does log into the index page but I try to get the content of the page where file hyperlinks are present then I am not logged in I assume that after looking at the content of the page

Secondly, How can we download a file from the indirect hyperlink of a file which directs to some action which then downloads a file. Please guide, as there is not much help available for this particular use case

Below is my code

use WWW::Mechanize;
use LWP;

my $username = 'user'; 
my $password = 'pass';

my $mech = WWW::Mechanize->new();
$mech -> cookie_jar(HTTP::Cookies->new());
$mech -> get('some_website/index.html?#');
$mech -> form_name('form');
$mech -> field ('user' => $username);
$mech -> field ('password' => $password);
$mech->submit();
$mech -> get('actual_page_address_with_file_hyperlinks?adfgenDispatchAction=examine&idProgressivo=0&idFlusso=4200212');
#print $mech-> content();

$mech->save_content("result.html");

my @links = $mech->links();
for my $link ( @links ) {

    #if(index($link->text,"Scarica")!= -1)
    #{
    printf "%s, %s\n", $link->text, $link->url;
    #}
}

;

As the website was using CSRF token and there was no hidden tag defined in the login page to store CSRF token, so token generation in the script was not helping.

I used WWW:: Selenium and I was able to log in to the site and download the files. Issue resolved –