Update app.py

app.py

@@ -7,7 +7,7 @@ from langchain_text_splitters import CharacterTextSplitter
 from langchain_community.vectorstores import FAISS
 from langchain_community.embeddings import HuggingFaceEmbeddings
 from langchain.chains import RetrievalQA
-from langchain_community.llms import HuggingFacePipeline
+from langchain.llms import HuggingFacePipeline
 from transformers import pipeline, AutoTokenizer, BitsAndBytesConfig
 from huggingface_hub import login