Update gemini_llm.py

Author: karanchellani

backend/src/gemini_llm.py

@@ -297,6 +297,10 @@ def get_graph_from_Gemini(model_version,
     location = "us-central1"
     #project_id = "llm-experiments-387609"                            
     credentials, project_id = google.auth.default()
+    if hasattr(credentials, "service_account_email"):
+      logging.info(credentials.service_account_email)
+    else:
+        logging.info("WARNING: no service account credential. User account credential?")                           
     vertexai.init(project=project_id, location=location)
 
     # combined_chunk_document_list=[]