According to HTTP specs, you should URL encode the parameters value, in this case the url parameter:

sub url_encode {
    my $string = shift;
  
    $string =~ s/([^a-z0-9_.!~*'() -])/sprintf "%%%02X", ord($1)/egi;
    $string =~ tr/ /+/;
  
    return $string;
}
[download]

But if you type this url in a browser, it should be encoded for you. My guess is that your problem has something to do with url encoding in the browser or url decoding in your script.