Update app.py

app.py

@@ -1,7 +1,7 @@
 import gradio as gr
-from langchain import LLMChain, ConversationChain
+from langchain.chains import LLMChain, ConversationChain
 from langchain.memory import ConversationBufferMemory
-from langchain.llms import HuggingFacePipeline
+from langchain_community.llms import HuggingFacePipeline
 from transformers import pipeline
 from langchain.document_loaders import PyPDFLoader, CSVLoader
 from langchain.text_splitter import RecursiveCharacterTextSplitter