后台完善-修复bug

application/api/lang/zh-cn.php

@@ -100,4 +100,5 @@ return [
     'An unexpected error occurred'                   => '发生了一个意外错误,程序猿正在紧急处理中',
     'This page will be re-directed in %s seconds'    => '页面将在 %s 秒后自动跳转',
     'Username already exist'    => '用户名已存在',
+    'User not found'    => '未找到该用户',
 ];