title: I have an error when executing ionic serve
body: <p>When I execute ionic serve, it shows the following errors:</p>
  
  <blockquote>
    <p>Refused to load the image '<a href="http://localhost:8100/favicon.ico" rel="noreferrer">http://localhost:8100/favicon.ico</a>' because
    it violates the following Content Security Policy directive:
    "default-src 'none'". Note that 'img-src' was not explicitly set, so
    'default-src' is used as a fallback.</p>
    
    <p>Failed to load resource: the server responded with a
    status of 404 (Not Found)</p>
  </blockquote>
  
  <p>How can I solve this?</p>