Update rag_llamaindex.py

rag_llamaindex.py

@@ -8,6 +8,7 @@ from llama_index.vector_stores.mongodb import MongoDBAtlasVectorSearch
 
 from pathlib import Path
 from pymongo import MongoClient
+from rag_base import BaseRAG
 
 #PDF_URL       = "https://arxiv.org/pdf/2303.08774.pdf"
 #WEB_URL       = "https://openai.com/research/gpt-4"