my $resp = $mech->get( 'http://www.perlmonks.org?node_id=109' );
# here ----------------------------------------^^
[download]

That should be

my $resp = $mech->get( 'http://www.perlmonks.org/?node_id=109' );
[download]

update: I see you want to store your cookie under /cookies - is that right? root dir? is that your folder, do you have write access to that?

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}