Refactor GET_DEFAULT_CHECKBOX function to remove "Model Name" column and handle exceptions in app.py

app.py

@@ -126,7 +126,7 @@ def init_leaderboard(dataframes):
         print("Search Term:", search_term)
         print("Selected Columns:", selected_columns)
         if isinstance(selected_columns, CheckboxGroup):
-            print("Selected Columns:", selected_columns.choices)
+            print("Selected Columns:", selected_columns.value)
         bak_selected_columns = copy.deepcopy(selected_columns)
         old_version = subset
         filtered_data = dataframes[subset]
@@ -135,7 +135,7 @@ def init_leaderboard(dataframes):
         filtered_data.sort_values(by="Total", ascending=False, inplace=True)
         # selected_columns.append("Model Name")
         if isinstance(selected_columns, CheckboxGroup):
-            selected_columns = selected_columns.choices
+            selected_columns = selected_columns.value
         print("Selected Columns:", selected_columns)
         selected_columns = [
             c for c in filtered_data.columns if c in selected_columns or c == "Model Name"