Hi, I don't know what your code is all about: you mention Mech but the code does not show it. I also don't know about your 500 error: that might be LWP not supporting 405 which is the code the site returns.

In any case, that page requires JavaScript to be enabled. WWW::Mechanize does not support JavaScript. Perhaps you can get around it by filling the CAPTCHA returned?

Using something more modern and simple to see what's going on:

use strict; use warnings; use feature 'say';
use Path::Tiny;
use HTTP::Tiny;
use HTTP::CookieJar;

my $jar_file = Path::Tiny->tempfile; $jar_file->touch;
my $jar = HTTP::CookieJar->new->load_cookies( $jar_file->lines );
my $ua = HTTP::Tiny->new( cookie_jar => $jar );

my $url = 'https://camelcamelcamel.com';
my $res = $ua->get( $url );
say $res->{'status'};
say $res->{'content'};
__END__
[download]

Output:

405
[ snip ]
                <p>
                    As you were browsing <strong>camelcamelcamel.com</
+strong> something about your browser made us think you were a bot. Th
+ere are a few reasons this might happen:
                </p>
                <ul>
                    <li>You're a power user moving through this websit
+e with super-human speed.</li>
                    <li>You've disabled JavaScript in your web browser
+.</li>
                    <li>A third-party browser plugin, such as Ghostery
+ or NoScript, is preventing JavaScript from running. Additional infor
+mation is available in this <a title='Third party browser plugins tha
+t block javascript' href='http://ds.tl/help-third-party-plugins' targ
+et='_blank'>support article</a>.</li>
                </ul>

                <p>After completing the CAPTCHA below, you will immedi
+ately regain access to camelcamelcamel.com.</p>

[ snip ]
[download]

Hope this helps!