Hi,
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.
Log
INFO: Page fetched successfully
INFO: 16 metatags were found
INFO: twitter:card = player tag found
WARN: Not whitelisted
index.html
<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">
/player/index.html
<!DOCTYPE HTML>
<html>
<head>
</head>
<body>
Sample player!
<audio controls>
<source src="https://jinjor.github.io/home/contents/music/2015/glass.mp3" type="audio/mp3">
</audio>
</body>
Of course I checked all meta tags again and again, read the docs, compare to sample player, etc.
Any idea?