Hints for f3d in main

Warnings

• screenshot-download-error
  Error while downloading screenshot from 'https://f3d-app.github.io/f3d/gallery/04-f3d.png': URL was not found on the server.
  This might be a temporary server issue, or the screenshot is no longer available.
• screenshot-download-error
  Error while downloading screenshot from 'https://f3d-app.github.io/f3d/gallery/directScalars.png': URL was not found on the server.
  This might be a temporary server issue, or the screenshot is no longer available.
• screenshot-download-error
  Error while downloading screenshot from 'https://f3d-app.github.io/f3d/gallery/01-f3d.png': URL was not found on the server.
  This might be a temporary server issue, or the screenshot is no longer available.
• screenshot-download-error
  Error while downloading screenshot from 'https://f3d-app.github.io/f3d/gallery/02-f3d.png': URL was not found on the server.
  This might be a temporary server issue, or the screenshot is no longer available.
• screenshot-download-error
  Error while downloading screenshot from 'https://f3d-app.github.io/f3d/gallery/03-f3d.png': URL was not found on the server.
  This might be a temporary server issue, or the screenshot is no longer available.
• screenshot-download-error
  Error while downloading screenshot from 'https://f3d-app.github.io/f3d/gallery/05-f3d.png': URL was not found on the server.
  This might be a temporary server issue, or the screenshot is no longer available.
• screenshot-download-error
  Error while downloading screenshot from 'https://f3d-app.github.io/f3d/gallery/07-f3d.png': URL was not found on the server.
  This might be a temporary server issue, or the screenshot is no longer available.
• screenshot-download-error
  Error while downloading screenshot from 'https://f3d-app.github.io/f3d/gallery/08-f3d.png': URL was not found on the server.
  This might be a temporary server issue, or the screenshot is no longer available.