checking for JSON serialization errors

ai_ta_backend/nomic_logging.py

@@ -59,6 +59,7 @@ def log_convo_to_nomic(course_name: str, conversation) -> str:
       embeddings = map_embeddings_df[prev_index-1].reshape(1, 1536)
       prev_convo = prev_data['conversation'].values[0]
       prev_id = prev_data['id'].values[0]
+      print("prev_id print: ", prev_data['id'])
       print("prev_id: ", prev_id)
       created_at = pd.to_datetime(prev_data['created_at'].values[0]).strftime('%Y-%m-%d %H:%M:%S')
       print("prev_created_at: ", created_at)