Unable to render Card preview - player card on GitHub Pages




Sorry if this is duplicated with others, but I’m not sure this is an unique case or not.

I got the message “Unable to render Card preview” on Card validator while making player card.
I’m on the way of making my home page on GitHub. I haven’t get my domain yet so the top page is https://jinjor.github.io/home/. Does it matter? I confirmed summary card is fine but cannot get player card rendered.


INFO:  Page fetched successfully
INFO:  16 metatags were found
INFO:  twitter:card = player tag found
WARN:  Not whitelisted


  <meta property="og:type" content="website">
  <meta property="og:title" content="Twitter Card Sample">
  <meta property="og:url" content="https://jinjor.github.io/home/">
  <meta property="og:image" content="https://jinjor.github.io/home/assets/player.png">
  <meta property="og:description" content="twitter card sample">
  <meta property="og:site_name" content="Twitter Card Sample">
  <meta name="twitter:card" content="player">
  <meta name="twitter:site" content="@jinjor">
  <meta name="twitter:creator" content="@jinjor">
  <!-- <meta name="twitter:title" content="Twitter Card Sample"> -->
  <!-- <meta name="twitter:description" content="twitter card sample"> -->
  <!-- <meta name="twitter:image" content="https://jinjor.github.io/home/assets/player.png"> -->
  <meta name="twitter:player" content="https://jinjor.github.io/home/player/index.html">
  <meta name="twitter:player:height" content="270">
  <meta name="twitter:player:width" content="480">


  Sample player!
  <audio controls>
    <source src="https://jinjor.github.io/home/contents/music/2015/glass.mp3" type="audio/mp3">

Of course I checked all meta tags again and again, read the docs, compare to sample player, etc.

Any idea?


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