HarmonyOS 鸿蒙Next Window.loadcontentbyname 失败

HarmonyOS 鸿蒙Next Window.loadcontentbyname 失败

按照文档指导使用loadcontentbyname加载内容但是失败了

let context : Context = globalThis.context
window.createWindow({
  name: 'loading_window',
  windowType: window.WindowType.TYPE_DIALOG,
  ctx: context
}).then(async win => {
  MessageHub.tgtWindow = win

  await win.loadContentByName(MainPage.entryName)

  win.setWindowBackgroundColor('#88000000')
  let d = display.getDefaultDisplaySync()
  await win.resize(d.width, d.height)
  await win.setWindowFocusable(true)
  win.showWindow().then(() => {})

使用creatwindow创建新窗口然后加载内容，但是代码在创建窗口后的loadcontentbyname部分报错

[(-1:100000:active)] [com.DefaultCompany.sysAPIPJ][entry][100001]: Initialize: MainPage
[(100001:100001:scope)] RunPage:MainPage
[(100001:100001:scope)] GetAsset failed: manifest.json
[(100001:100001:scope)] Page router manager is creating page[1]: url:
MainPage path: , recoverable: yes, namedRouter: yes
(1321)InitUIContent: Initialized, isUIExtensionSubWindow:0, isUIExtensionAbilityProcess:0
[(100001:100001:scope)] named route MainPage not found!
[(100001:100001:scope)] Update RootComponent Failed or LoadNamedRouter Failed
[(-1:100000:active)] [com.DefaultCompany.sysAPIPJ][entry][100001]: UpdateWindowVisible: 1, hasDecor: 0
[(100001:100001:scope)] failed to create page in LoadPage

加载的页面的代码如下

export const entryName : string = 'MainPage';
@Entry({routeName: entryName, storage : LocalStorage.getShared()})
@Component
export struct Index {
  @State message: string = 'Hello World'
  build() {
    Row() {
      Column() {
        Text(this.message)
          .fontSize(50)
          .fontWeight(FontWeight.Bold)
      }
      .width('100%')
    }
    .height('100%')
  }
}