Update app.py

app.py

@@ -8,10 +8,10 @@ from langchain.text_splitter import CharacterTextSplitter
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain.vectorstores import Chroma
 from langchain_community.document_loaders import TextLoader
-from langchain.chat_models import ChatOpenAI
+from langchain_community.chat_models import ChatOpenAI
 from langchain import PromptTemplate
 from langchain.chains import LLMChain
-from langchain.llms import OpenAI
+from langchain_community.llms import OpenAI
 from langchain_community.vectorstores.faiss import FAISS
 #from langchain.vectorstores import FAISS