Update app.py

app.py

@@ -69,6 +69,6 @@ with container:
 if st.session_state['assistant']:
     with response_container:
         for i in range(len(st.session_state['assistant'])):
-           if i != 0:
+            if i != 0:
                 message(st.session_state["human"][i], is_user=True, key=str(i) + '_user', avatar_style="adventurer")
             message(st.session_state["assistant"][i], key=str(i), avatar_style="bottts")