I’m new to checkout extensions and stuck on external API requests. I’ve set api_access = true and network_access = true in [extensions.capabilities], enabled network API access in the Shopify Partner Dashboard, and built the app with the latest CLI commands on a Developer Preview test store for Checkout Extension testing. My backend handles CORS properly too. But when I run Shopify app dev, I get a 401 Unauthorized error for /private_access_tokens in the console.
There are some solutions there that might help. If you do still see the error popping up there though, I’d recommend opening a Github Issue in that repo since it would get you in touch with the team who manages the CLI on our end directly.
Hope this helps a bit, let me know if I can clarify anything on our end here.