Update app.py

app.py

@@ -42,9 +42,10 @@ def respond(message, chat_history):
 
     if len(chat_history) != 0: 
         chat_history = [(chat_history[0][0], chat_history[0][1])]
-    
+
+    model = as.str(get_model())    
     # Create ChatOpenAI and ConversationalRetrievalChain
-    model = ChatOpenAI(model=get_model())
+    model = ChatOpenAI(model=model)
     qa = ConversationalRetrievalChain.from_llm(model, retriever)
 
     bot_message = qa({"question": message, "chat_history": chat_history})