What is the reason why the page is not fully loaded when using splash to access Taobao?

the script is as follows:

function main(splash, args)
  splash:go{
    "http://www.taobao.com",
    headers={["User-Agent"]="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36"}
  }
  splash:wait(10)
  return {png=splash:png(),har=splash:har()}
end

the header of the browser agent is added, but the picture is not shown in the screenshot of the response. As shown in the figure

har4request,request

below, it is normal to visit JD.com. Is this because Taobao has made some restrictions?