You need to remove wrong HTML header:

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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before printing

Something like this:

my $page = $response->content;
$page =~ s{<meta http-equiv="Content-Type" content="text/html; charset
+=utf-8" />}{<meta http-equiv="Content-Type" content="iso-8859-1" />};
print $page;
[download]