This is a strange behavior, but a site with the URL you want to get requires the following headers: Accept, Encoding, Accept-Language, Accept-Charset, Cookie.
Otherwise, the server does not respond at all.
You can easily do this by simply pasting the following code before the get request:
$browser->add_header( "Accept" => "", "Accept-Encoding" => "", "Accept-Language" => "", "Accept-Charset" => "", "Cookie" => "" );
Instead of empty fields, you can insert some real values, but this also works.
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