fix bug

application/Admin/Controller/UserauthController.class.php

@@ -319,6 +319,7 @@ class UserauthController extends AdminbaseController
             $result =  $auth->where("uid='{$_POST['uid']}'")->save([
                 'status' => $_POST['status'],
                 'reason' => $_POST['reason'],
+                'uptime' => time()
             ]);
             if ($result) {
                 $data = $auth->where("uid='{$_POST['uid']}'");