Update chatbot_rag.py

chatbot_rag.py

@@ -6,7 +6,8 @@ from langchain_community.embeddings import HuggingFaceEmbeddings
 from transformers import AutoTokenizer, AutoModelForCausalLM, pipeline
 from langchain.llms import HuggingFacePipeline
 from langchain.chains import RetrievalQA
-
+from langchain_huggingface import HuggingFacePipeline, HuggingFaceEmbeddings
+from langchain_chroma import Chroma
 
 def build_qa():
     """Builds and returns the RAG QA pipeline."""