Update app.py

app.py

@@ -150,7 +150,7 @@ st.title("Query Parameters Demo")
 st.write("Current Query Parameters:", st.query_params)
 
 # Example: Using query parameters to navigate or trigger functionalities
-if 'action' in st.query_params():
+if 'action' in st.query_params:
     action = st.query_params()['action'][0]  # Get the first (or only) 'action' parameter
     if action == 'show_message':
         st.success("Showing a message because 'action=show_message' was found in the URL.")