尽管已正确链接，但Apple Touch图标未显示

Question

我正在尝试添加一系列在共享网站并将其添加到主屏幕时显示的图标

我正在使用以下代码

  <link rel="shortcut icon" href="{{ asset_path }}images/favicon.ico?0.18.3" type="image/x-icon" />
  <link rel="apple-touch-icon-precomposed" sizes="180x180" href="{{ asset_path }}images/apple-touch-icon-180x180.png?0.18.3">
  <link rel="apple-touch-icon-precomposed" sizes="167x167" href="{{ asset_path }}images/apple-touch-icon-167x167.png?0.18.3">
  <link rel="apple-touch-icon-precomposed" sizes="152x152" href="{{ asset_path }}images/apple-touch-icon-152x152.png?0.18.3">
  <link rel="apple-touch-icon-precomposed" sizes="120x120" href="{{ asset_path }}images/apple-touch-icon-120x120.png?0.18.3">
  <link rel="apple-touch-icon-precomposed" sizes="76x76" href="{{ asset_path }}images/apple-touch-icon-76x76.png?0.18.3">
  <link rel="apple-touch-icon-precomposed" href="{{ asset_path }}images/apple-touch-icon-60x60.png?0.18.3">

经过检查，看来他们正确链接了，但对为什么不显示感到困惑

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