title: Crbug/1173575, non-JS module files deprecated. chromewebdata/(index)꞉5305:9:5551
body: <p>I just created a new project and have run it for the first time using <kbd>F5</kbd> or <kbd>Ctrl</kbd> + <kbd>F5</kbd>. The result in Chrome is:</p>
  <blockquote>
  <p>The site can't be reached</p>
  <p>err_connection_refused</p>
  </blockquote>
  <p>I checked the option at the breakpoints for &quot;Exceptions caught&quot; and the following error is displayed.</p>
  <p><a href="https://i.stack.imgur.com/r8Zmr.png" rel="noreferrer"><img src="https://i.stack.imgur.com/r8Zmr.png" alt="Enter image description here" /></a></p>
  <p>Without &quot;Exceptions caught&quot; checked, the next error raised:</p>
  <p><a href="https://i.stack.imgur.com/pIWZA.png" rel="noreferrer"><img src="https://i.stack.imgur.com/pIWZA.png" alt="Enter image description here" /></a></p>
  <p>I tried to run &quot;ng s -o&quot; from the terminal and all work fine. The site is working well on port 4200, but I like to debug.</p>
  <p>Here is my <em>launch.json</em> file, all by default:</p>
  <pre><code>{
      // Use IntelliSense to learn about possible attributes.
      // Hover to view descriptions of existing attributes.
      // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
      &quot;version&quot;: &quot;0.2.0&quot;,
      &quot;configurations&quot;: [
          {
              &quot;type&quot;: &quot;pwa-chrome&quot;,
              &quot;request&quot;: &quot;launch&quot;,
              &quot;name&quot;: &quot;Launch Chrome against localhost&quot;,
              &quot;url&quot;: &quot;http://localhost:4200&quot;,
              &quot;webRoot&quot;: &quot;${workspaceFolder}&quot;
          }
      ]
  }
  </code></pre>
  <p>Why is this happening?</p>