Update app.py

app.py

@@ -5,8 +5,8 @@ from langchain_text_splitters import RecursiveCharacterTextSplitter
 from langchain_huggingface import HuggingFaceEmbeddings
 from langchain_community.vectorstores import FAISS
 from langchain_groq import ChatGroq
-from langchain.chains import ConversationalRetrievalChain
-from langchain.memory import ConversationBufferMemory
+from langchain_classic.chains import ConversationalRetrievalChain
+from langchain_classic.memory import ConversationBufferMemory
 
 # --- 1. SETUP API ---
 # In Hugging Face, we use os.environ to get the secret