Hey,
Hope you’re keeping well.
If your AI Studio app preview is failing due to aistudiocdn.com being blocked, the quickest way to resolve it is exactly as you described—update the <script type=”importmap”> URLs in index.html to use https://esm.sh instead. This ensures your dependencies load from a widely accessible CDN. For React-dependent libraries, always append ?external=react to avoid duplicate React instances and runtime hook errors. Once saved, the preview should reload without network blocks. In corporate environments, you can also request firewall whitelisting for aistudiocdn.com to avoid manual edits in future projects.
Thanks and regards,
Taz