diff --git a/service/user.go b/service/user.go
index 0564f85..d643976 100644
--- a/service/user.go
+++ b/service/user.go
@@ -1,6 +1,7 @@
 package service
 
 import (
+	"errors"
 	"gorm.io/gorm"
 	gdb "wireguard-ui/global/client"
 	"wireguard-ui/global/constant"