Update app.py

app.py

@@ -159,7 +159,7 @@ if 'action' in st.query_params:
         st.experimental_rerun()
 
 # Handling repeated keys
-if 'multi' in st.query_params():
+if 'multi' in st.query_params:
     multi_values = get_all_query_params('multi')
     st.write("Values for 'multi':", multi_values)