Update app.py

app.py

@@ -33,7 +33,7 @@ if user_input:
       response = model.generate_content(chat_history)
 
   # Get response text from response object
-  response_text = response.contents[-1].parts[0].text
+  response_text = response.text
 
   # Add response message to chat history
   chat_history.append(response_text)