Update app.py

app.py

@@ -41,9 +41,9 @@ if prompt := st.chat_input("How can I help you today?"):
             stream=True,
         )
         
-        for chunk in response:
-            if chunk.choices[0].delta.content is not None:
-                full_response += chunk.choices[0].delta.content.replace('\\$','$').replace('$','\\$')
+        for event in response:
+            if event.type == 'response.output_text.delta':
+                full_response += event.delta.content.replace('\\$','$').replace('$','\\$')
                 message_placeholder.markdown(full_response + "▌")
         
         message_placeholder.markdown(full_response)