diff --git a/src/store/modules/settings.js b/src/store/modules/settings.js
index fdd29ec26..8ffa003e7 100644
--- a/src/store/modules/settings.js
+++ b/src/store/modules/settings.js
@@ -64,6 +64,9 @@ const actions = {
         changeThemeColors(themeColors)
         resolve(response)
       }).catch(error => {
+        if (error.response && error.response.status === 400) {
+          alert('自 v3.6 版本开始，要求配置可信任域名或主机，否则无法正常使用, 查看: https://github.com/jumpserver/jumpserver/releases/tag/v3.6.0')
+        }
         reject(error)
       })
     })
diff --git a/src/styles/ztree_icon.scss b/src/styles/ztree_icon.scss
index 560f76e02..b7c1d2bea 100644
--- a/src/styles/ztree_icon.scss
+++ b/src/styles/ztree_icon.scss
@@ -58,6 +58,8 @@
     background: url('./icons/switch.png') no-repeat center left transparent;
   }
 
+  &.k8s_ico_open,
+  &.k8s_ico_close,
   &.k8s_ico_docu {
     background: url('./icons/k8s.png') center left no-repeat;
   }