diff --git a/process/Task3.php b/process/Task3.php
index b88444c..0cddb61 100644
--- a/process/Task3.php
+++ b/process/Task3.php
@@ -28,7 +28,7 @@ class Task3
                 $user_id = $value->user_id;
                 //判定有没有父级 这里父级没有默认是0
                 $user = User::find($user_id);
-                if ($user->f_id==0) {
+                if (!empty($user)&&$user->f_id==0) {
                     continue;
                 }             
                 //获取该用户的父级