title: I added a Content-Security-Policy but still the security warning appears
body: <p>I added a Content-Security-Policy as suggested here: <a href="https://www.electronjs.org/docs/tutorial/security#6-define-a-content-security-policy" rel="nofollow noreferrer">https://www.electronjs.org/docs/tutorial/security#6-define-a-content-security-policy</a> and here: <a href="https://content-security-policy.com/examples/electron/" rel="nofollow noreferrer">https://content-security-policy.com/examples/electron/</a></p>
  <pre><code>&lt;html lang=&quot;en&quot;&gt;
  &lt;head&gt;
    &lt;meta http-equiv=&quot;Content-Security-Policy&quot; content=&quot;default-src 'self'&quot;&gt;
    &lt;meta charset=&quot;UTF-8&quot;&gt;
    &lt;meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1.0&quot;&gt;
    &lt;title&gt;New Electron App&lt;/title&gt;
  &lt;/head&gt;
  &lt;body&gt;
    &lt;span&gt;Our new Electron app&lt;/span&gt;
    &lt;div id=&quot;root&quot;&gt;&lt;/div&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  <p>But still I get this message:
  “Electron Security Warning (Insecure Content-Security-Policy). This renderer process has either no Content Security Policy set or a policy with “unsafe-eval” enabled. This exposes users of this app to unnecessary security risks. This warning will not show up once the app is packaged.”</p>
  <p><a href="https://i.stack.imgur.com/Ge0Dx.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Ge0Dx.png" alt="enter image description here" /></a></p>
  <p>How to solve this security warning?</p>