.

app.py

@@ -126,6 +126,13 @@ def view_customer(index):
     is_first = index == 0
     is_last = index == len(customer_data) - 1
     
+    # 调试代码：先尝试返回不带统计信息的模板渲染
+    return render_template('edit_customers.html', 
+                           customer=customer, 
+                           index=index, 
+                           is_first=is_first, 
+                           is_last=is_last)
+
     # 计算统计数据
     total_emails, cold_lead_count, no_promotion_count = calculate_statistics()