Update app.py

app.py

@@ -866,7 +866,7 @@ def main():
 
     st.sidebar.markdown("### 💬 Chat Dialog")
     chat_content = asyncio.run(load_chat())
-       with st.sidebar.expander("Chat History"):
+    with st.sidebar.expander("Chat History"):
         numbered_content = "\n".join(f"{i+1}. {line}" for i, line in enumerate(chat_content))
         st.code(numbered_content, language="python")