Why I am getting "Not allowed to load local resource"?

Questions
1

I am creating a cordova app which opens PDF files. I am reading all the files in the device using cordova-plugin-file and then opening them using file:// but I am getting error that Not allowed to load local resource. I do not think it is a CORS issue because even content:// url are not working. Also, I am testing on android 11. Here’s my index.html:-

<!DOCTYPE html>
<html>
    <head>
      <meta charset="utf-8">
      <meta http-equiv="Content-Security-Policy" content="default-src * 'self' 'unsafe-inline' 'unsafe-eval' data: gap: content:">
      <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no, viewport-fit=cover">

      <meta name="theme-color" content="#fff">
      <meta name="format-detection" content="telephone=no">
      <meta name="msapplication-tap-highlight" content="no">
      <title>S Pdf Reader</title>
      <% if (TARGET === 'web') { %>
         <meta name="apple-mobile-web-app-capable" content="yes">
         <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
         <link rel="apple-touch-icon" href="icons/apple-touch-icon.png">
         <link rel="icon" href="icons/favicon.png">
         <link rel="manifest" href="/manifest.json">
       <% } %>
</head>
<body>
  <div id="app"></div>
  <% if (TARGET === 'cordova') { %>
  <script src="cordova.js"></script>
  <% } %>
  <script type="module" src="./js/app.js"></script>
</body>
</html>