Update app/routes/chat_api.py

app/routes/chat_api.py

@@ -108,7 +108,7 @@ async def chat_completions(fastapi_request: Request, request: OpenAIRequest, api
             rotated_credentials, rotated_project_id = credential_manager_instance.get_random_credentials()
             if rotated_credentials and rotated_project_id:
                 try:
-                    client_to_use = genai.Client(vertexai=True, credentials=rotated_credentials, project=rotated_project_id, location="us-central1")
+                    client_to_use = genai.Client(vertexai=True, credentials=rotated_credentials, project=rotated_project_id, location="global")
                     print(f"INFO: Using rotated credential for project: {rotated_project_id}")
                 except Exception as e:
                     print(f"ERROR: Rotated credential client init failed: {e}. Falling back.")