Update app.py

app.py

@@ -3,6 +3,7 @@ import streamlit as st
 from modules.database import initialize_mongodb_connection
 from modules.auth import authenticate_user, get_user_role, register_user
 from modules.ui import (
+    main,
     login_register_page, 
     display_morphosyntax_analysis_interface, 
     display_semantic_analysis_interface,