Update app.py

app.py

@@ -255,7 +255,9 @@ def _plot_global_shap():
     return fig
 
 GLOBAL_FIG = _plot_global_shap()
-GLOBAL_FI_TEXT = (get_global_importance_table(MODEL) or pd.DataFrame())
+fi_df = get_global_importance_table(MODEL)
+GLOBAL_FI_TEXT = fi_df if (fi_df is not None) else pd.DataFrame()
+
 
 # ---------- Gradio UI ----------
 with gr.Blocks(theme=gr.themes.Soft(), css="""