Update app.py

app.py

@@ -9,7 +9,7 @@ from dotenv import load_dotenv
 
 from langchain.embeddings import OpenAIEmbeddings, HuggingFaceInstructEmbeddings
 from langchain.vectorstores import FAISS
-from langchain.chat_models import ChatOpenAI
+
 from langchain.memory import ConversationBufferMemory
 from langchain.chains import ConversationalRetrievalChain
 from htmlTemplates import css, bot_template, user_template