Hi everyone,
I’m running into a critical issue with my Shopify embedded app in production. Some users report that the app does not load and instead shows a completely white screen.
When inspecting the browser console, we consistently see this error:
Failed to load resource: the server responded with a status of 401 ()
more details:
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The app is embedded using Shopify App Bridge.
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This issue happens randomly for some stores.
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The URL contains the expected query parameters like hmac, shop, session, and id_token.
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The backend returns a 401 Unauthorized, and the frontend stays stuck on a white screen.
what i tried:
- The only thing that fixes it is manually deleting the session from the database — after that, the app loads normally again.
What could cause a valid session to suddenly result in a 401 Unauthorized, and why does deleting the session make the app work again?
Thanks in advance for any help or guidance!