i18n

resource/locales/en-US/translation.json

@@ -676,7 +676,8 @@
     "attach_title_header": "Add h1 section when create new page automatically",
     "attach_title_header_desc": "Add page path to the first line as h1 section when create new page",
     "recent_created__n_draft_num_desc": "Number of Recently Created Pages & Drafts Displayed",
-    "recently_created_n_draft_num_desc": "Number of recently created pages and drafts displayed on user page"
+    "recently_created_n_draft_num_desc": "Number of recently created pages and drafts displayed on user page",
+    "update_layout_success": "Succeeded to update layout"
   },
 
   "user_management": {

resource/locales/ja/translation.json

@@ -660,7 +660,8 @@
     "attach_title_header": "新規ページ作成時の h1 セクション自動挿入",
     "attach_title_header_desc": "新規作成したページの1行目に、ページのパスを h1 セクションとして挿入します。",
     "recent_created__n_draft_num_desc": "最近作成したページと下書きの表示数",
-    "recently_created_n_draft_num_desc": "ホーム画面の Recently Created での、1ページの表示数を設定します。"
+    "recently_created_n_draft_num_desc": "ホーム画面の Recently Created での、1ページの表示数を設定します。",
+    "update_layout_success": "レイアウトを更新しました"
   },
 
   "user_management": {

src/client/js/components/Admin/Customize/CustomizeLayoutSetting.jsx

@@ -23,7 +23,7 @@ class CustomizeLayoutSetting extends React.Component {
     const { t } = this.props;
 
     try {
-      toastSuccess(t(''));
+      toastSuccess(t('customize_page.update_layout_success'));
     }
     catch (err) {
       toastError(err);