title: Facebook Instant Game Faile to load some assets (images and fonts)
body: <p>When I publish in a Facebook instant game, my react app doesn't load some images and fonts.</p>
  <p>The strange situation:
  /src/assets</p>
  <ul>
  <li>in this folder, I have 5 images.png</li>
  <li>all of it is working remotely</li>
  <li>when I run the npm run build 3 of 5 images vanish from de build folder/static/media, and only 2 remain</li>
  <li>when I deploy it on Facebook, the 3 that vanish appear in the application, in the network seems that the build turns these 3 png into base64;</li>
  <li>the 2 remains do not work</li>
  <li>the fonts do not work too.</li>
  </ul>
  <p>Any Idea of why?
  I have already tried some of the solutions suggested in other topics like setting a  tag in HTML, or change the image of the folder (putting It in the public results in an error because of a react validation)</p>
  <p>The error in console: net::ERR_ABORTED 404.</p>