Twitter 卡片未呈现 - 错误：卡片名称无效（卡片错误）

Question

我已将此卡数据添加到此站点：

  <meta name="viewport" content="width=device-width, initial-scale=1">
  <meta name="description" content="Firefly Semantics Long Lead Time Capital Intensive Low Demand Service Parts Profit Optimization Help Center">
  <meta name="keywords" content="Long, Lead, Time, Capital, Intensive, Service, Parts, Profit, Optimization, aerospace, heavy, industries">
  <meta name="author" content="Ole Ersoy">  

  <meta name="description" content="Page description. No longer than 155 characters." />

  <!-- Twitter Card data -->
  <meta name="twitter:card" content="Firefly Semantics Long Lead Time Capital Intensive Low Demand Service Parts Profit Optimization Help Center">
  <meta name="twitter:site" content="https://help-service-parts.fireflysemantics.com/">
  <meta name="twitter:title" content="Firefly Semantics Service Parts Help">
  <meta name="twitter:description" content="Firefly Semantics Long Lead Time Capital Intensive Low Demand Service Parts Profit Optimization Help Center">
  <meta name="twitter:creator" content="@fireflysmtics">
  <-- Twitter Summary card images must be at least 120x120px -->
  <meta name="twitter:image" content="https://fireflysemantics.github.io/logo/service-parts-help-center/fs-logo-help-center.png">

但是，当我将链接粘贴到我的 twitter 帐户时，卡片不会呈现。

https://twitter.com/fireflysmtics

它确实在媒体上渲染。有任何想法吗？

这是一篇以卡片渲染结尾的中等文章示例：

https://medium.com/@ole.ersoy/capital-efficient-concept-c565b5b5eade

它在 Facebook 上也表现良好。

我找到了这个资源：

https://cards-dev.twitter.com/validator

当我把 URL 放在里面时，只说：

错误：无效的卡名（卡错误）

Answer 1

Twitter 卡片中不能包含任何随机数据。现在有允许的指定值。

“summary”, “summary_large_image”, “app”, or “player”.