Backend Provisioning Failure: Invalid project resource name projects/ (HTTP 400)

Google Antigravity
1

I am unable to use models in Antigravity. The Agent Manager is failing to auto-provision or reference a Project ID, resulting in an INVALID_ARGUMENT error because the project resource name is being sent as an empty string (projects/).

I have recently switched/added an alternate Google account, which may have caused an identity mismatch or a “split” in the backend project mapping for my subscription.

Troubleshooting performed (did not work):

  • Full logout/login and cleared local %APPDATA% (or Library/Application Support) cache.

  • Verified account has an active AI Pro/Ultra subscription.

  • Confirmed 2FA is active on the account.

  • Attempted to “force sync” via Google AI Studio project settings.

Technical Metadata:

  • Trajectory ID: `a2f30caa-ca06-4efc-a980-6c29dd15

  • TraceID: `0xd3d39c6b2e019

  • Error Message: Invalid project resource name projects/

  • Status Code: 400 BAD REQUEST / INVALID_ARGUMENT