[Urgent] Infinite Loading Loop on Project Access - RpcError: status [3] (INVALID_ARGUMENT)

I am experiencing a persistent infinite loading issue when attempting to open my Stitch project. This issue seems to be a widespread regression as similar cases are being reported on the Google AI for Developers forum.

Technical Details:

  • Error Logs: The Chrome DevTools console consistently reports RpcError during the ListSession poll.
  • Status Code: status: [3] (INVALID_ARGUMENT), suggesting a mismatch in API request parameters or a server-side schema validation failure.
  • Symptoms: The UI remains on the dark loading screen with the spinner indefinitely.

Steps Already Taken (Troubleshooting):

  • Performed a Hard Refresh (Cmd + Shift + R).
  • Cleared all site data (Cache, Cookies, and Local Storage) via the Application tab in DevTools.
  • Tested in Incognito Mode to rule out extension conflicts.
  • Attempted access by removing URL parameters (e.g., ?lfhs=2).
  • Observation: The issue persists across all the above attempts, confirming a server-side or session-level corruption.

Environment:

  • OS: macOS
  • Browser: Chrome (Latest)

Requested Action:

  • Please investigate the server-side logs for the INVALID_ARGUMENT error associated with the ListSession RPC call for the provided Project ID.

I have attached screenshots of the symptoms along with the Google DevTools console logs for your reference.

Now it’s working. Thank you Support Team.