change on_chagne function

app.py

@@ -249,7 +249,7 @@ st.write("""
 for chat in st.session_state.chat_history:
     st_message(**chat)
 
-query_input = st.text_input(label= 'What would you like to know about AIT?' , key = 'my_text_input', on_change= retrieve_answer )
+query_input = st.text_input(label= 'What would you like to know about AIT?' , key = 'my_text_input', on_change= new_retrieve_answer )
 # generate_button = st.button(label = 'Ask question!')
 
 # if generate_button: