HarmonyOS 鸿蒙Next 求助：点击按钮动态获取授权，无法弹窗

点击按钮动态授权，但是无法弹窗

private permissions: Array<Permissions> = [‘ohos.permission.APPROXIMATELY_LOCATION’,
  ‘ohos.permission.LOCATION’];

async reqPermissionsFromUser() {
  let atMgr = abilityAccessCtrl.createAtManager();

  await atMgr.requestPermissionsFromUser(this.context, this.permissions).then((data) => {
    let grantStatus: Array<number> = data.authResults;
    let length: number = grantStatus.length;
    for (let i = 0; i < length; i++) {
      if (grantStatus[i] === 0) {
        console.log(‘HUWEI 已授权’);
      } else {
        // 用户拒绝授权，提示用户必须授权才能访问当前页面的功能，并引导用户到系统设置中打开相应的权限
        console.log(‘HUWEI 未授权’);
      }
    }
  }).catch((err: BusinessError) => {
    console.error(Failed to request permissions from user. Code is ${err.code}, message is ${err.message});
  })
}

报错：

E     <1690>GetDecorHeight: Get app window decor height failed

E     [ui_ability_impl.cpp(operator():410)]null applicationContext or lifecycleCallback