Resource interpreted as Document but transferred with MIME type application/vnd.openxmlformats-officedocument.wordprocessingml.document

$file = "uploads/demo.docx";
        //text/html; charset=UTF-8 - С этим заголовком предупреждений нету
        header ("Content-Type: application/msword, application/vnd.openxmlformats-officedocument.wordprocessingml.document; charset=UTF-8");
        header ("Accept-Ranges: bytes");
        header ("Content-Length: ".filesize($file));
        header ("Content-Disposition: attachment; filename=demo.docx");
        readfile($file);

<a href="http://server/uploads/demo.docx">Скачать</a>