HTTP 400 Invalid project resource name projects/ - Google AI Pro

I’m getting HTTP 400 “Invalid project resource name projects/”
error when using Agent. I’m on Google AI Pro plan.

TraceID: 0x88db90
Trajectory ID: 933182d1-751b-
OS: macOS

Please help fix the Cloud Project ID on my account.

Still not resolved. New error info:

TraceID: 0x8f8f9fc
Trajectory ID: 4d9e7bdb-6a98-4e62-
Date: April 3, 2026

I created a new Google Cloud project and enabled
Generative Language API, but the error persists.
Project ID is still empty in the request: “projects/”

Please fix the backend account provisioning.