diff --git a/backend/app/service/ApprovalService.php b/backend/app/service/ApprovalService.php
index 39ae0e1..b3ec8fd 100644
--- a/backend/app/service/ApprovalService.php
+++ b/backend/app/service/ApprovalService.php
@@ -264,6 +264,8 @@ class ApprovalService
             }
 
             if ($currentNode) {
+                error_log("🔧 准备更新消息卡片: currentNode存在, notificationService=" . ($this->notificationService ? '存在' : 'null'));
+
                 // 更新操作人自己的消息卡片
                 $this->notificationService->setAppByUser($approverId);
                 $this->notificationService->updateActorMessageCard(