Update app.py

app.py

@@ -27,8 +27,8 @@ data_df = build_dataframe()
 
 query_params = st.experimental_get_query_params()
 # There is only one value for each parameter, retrieve the one at # # index 0
-username = query_params.get('username', '')[0]
-password = query_params.get('password', '')[0]
+username = query_params.get('username')[0]
+password = query_params.get('password')[0]
 view = query_params.get('view', None)[0]
 
 # Super basic (and not recommended) way to store the credentials