Hello,

I'm encountering an issue using the Google GenAI client with Vertex AI credentials. Here's the relevant snippet of my code:

from google.oauth2 import service_account
from google.genai import Client

credentials = service_account.Credentials.from_service_account_file('path/to/credentials.json')
client = Client(vertexai=True, project='my-project-id', location='us-central1', credentials=credentials)

When running this code, it crashes with the following error:

('invalid_scope: Invalid OAuth scope or ID token audience provided.', {'error': 'invalid_scope', 'error_description': 'Invalid OAuth scope or ID token audience provided.'})

What I’ve Tried:

• The same service account credentials work for other Vertex AI operations.
• Verified the service account has sufficient permissions.

Question:

• Do I need to adjust the OAuth scope or provide additional parameters for the GenAI client?
• Are there any known incompatibilities or additional setup steps for using Vertex credentials with the GenAI client?

Thank you!