change default values

src/client/js/components/Admin/App/AppSettingsPage.jsx

@@ -12,8 +12,7 @@ import AppSettingsPageContents from './AppSettingsPageContents';
 const logger = loggerFactory('growi:appSettings');
 
 function AppSettingsPage(props) {
-
-  if (props.adminAppContainer.state.title === undefined) {
+  if (props.adminAppContainer.state.title === 0) {
     throw new Promise(async() => {
       try {
         await props.adminAppContainer.retrieveAppSettingsData();

src/client/js/services/AdminAppContainer.js

@@ -19,7 +19,8 @@ export default class AdminAppContainer extends Container {
 
     this.state = {
       retrieveError: null,
-      title: undefined,
+      // set dummy value tile for using suspense
+      title: 0,
       confidential: '',
       globalLang: '',
       fileUpload: '',