Update app.py

app.py

@@ -7,7 +7,6 @@ from langchain.embeddings.openai import OpenAIEmbeddings
 from langchain.vectorstores import DeepLake
 from langchain.chat_models import ChatOpenAI
 from langchain.chains import ConversationalRetrievalChain
-from langchain.llms import OpenAI
 
 def set_api_key(key):
     os.environ["OPENAI_API_KEY"] = key
@@ -36,7 +35,7 @@ def respond(message, chat_history):
 
     # Create ChatOpenAI and ConversationalRetrievalChain
     model = ChatOpenAI(model='gpt-3.5-turbo')
-    qa = ConversationalRetrievalChain.from_llm(model, retriever, OpenAI(temperature=0))
+    qa = ConversationalRetrievalChain.from_llm(model, retriever)
 
     chat_history=[]
     bot_message = qa({"question": message, "chat_history": chat_history})