Update app.py

app.py

@@ -171,7 +171,7 @@ def setup_retrieval_pipeline(file_path, persist_dir, api_key):
 if __name__ == "__main__":
     st.set_page_config(
         page_title="Patent Chat: Google Patents Chat Demo",
-        page_icon="\ud83d\udd8a\ufe0f",
+        page_icon="📜",
         layout="wide",
         initial_sidebar_state="expanded",
     )