Update app.py

app.py

@@ -10,9 +10,9 @@ os.environ["LANGCHAIN_API_KEY"] = st.secrets['OPENAI_API_KEY']
 from langchain.prompts import PromptTemplate
 from langchain.chains.llm import LLMChain
 from langchain.chains.combine_documents.stuff import StuffDocumentsChain
-from langchain.chat_models import ChatOpenAI
 from langchain.chains import RetrievalQA
 from langchain.text_splitter import RecursiveCharacterTextSplitter
+from langchain_community.chat_models import ChatOpenAI
 from langchain_community.vectorstores import FAISS
 from langchain_community.document_loaders import HuggingFaceDatasetLoader
 from langchain_community.embeddings import HuggingFaceEmbeddings