Update app.py

app.py

@@ -58,7 +58,6 @@ from langchain_community.embeddings import HuggingFaceEmbeddings
 from langchain_community.vectorstores import FAISS
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain_core.documents import Document
-from langchain.chains.Youtubeing import load_qa_chain
 from langchain_community.llms import HuggingFacePipeline
 from langchain.prompts import ChatPromptTemplate, SystemMessage
 from transformers import AutoModelForCausalLM, AutoTokenizer, pipeline