Update app.py

app.py

@@ -42,7 +42,7 @@ def analyze_report(file):
     try:
         sankey_fig = analyze_teacher_dashboard(excel_path=file.name)
         cluster_fig, cluster_stats = cluster_and_visualize(excel_path=file.name)
-        advice = generate_teaching_advice(sankey, cluster_stats)
+        advice = generate_teaching_advice(sankey_fig, cluster_stats)
 
         # 统计表格
         stats_table = """