Update app.py

app.py

@@ -989,7 +989,7 @@ def update_path(clickData,
         except (TypeError, ValueError):
             return path, subsel, switchsel
         if i is None or j is None:
-            return path, subsel
+            return path, subsel, switchsel
         if not (0 <= i < d and 0 <= j < d):
             return path, subsel, switchsel
         return swap_dims_path(path, d, i, j), subsel, switchsel
@@ -1181,7 +1181,7 @@ def update_path(clickData,
     Input("switch_dims_store", "data"),
     Input("layout_mode_store", "data"),
 )
-def render(d, show_labels_vals, path, mark_vals, mark_dist_vals, subsel, layout_mode):
+def render(d, show_labels_vals, path, mark_vals, mark_dist_vals, subsel, switchsel, layout_mode):
     labels_vals = show_labels_vals or []
     show_bits = "bits" in labels_vals
     show_ints = "ints" in labels_vals