HarmonyOS 鸿蒙Next '@Prop' decorated attribute 'enablementItem' must be of the string, number, or boolean type. <etsLint>

HarmonyOS 鸿蒙Next ‘@Prop’ decorated attribute ‘enablementItem’ must be of the string, number, or boolean type. <etsLint> 因为，最新的DevEco Studio NEXT Developer Beta6只支持next系统，之前HarmonyOs系统的手机识别不了，所以我用的是devecostudio-windows-3.1.0.501。

问题是，再按照快速开始里的代码（网格和列表组件的使用-HarmonyOS应用开发快速入门-Codelabs-华为开发者联盟 (huawei.com)）进行学习时，出现如题的错误。

但是，代码可以正常运行。

class ArticleClass {
  id: string = '';
  imageSrc: ResourceStr = '';
  title: string = '';
  brief: string = '';
  webUrl: string = '';

  constructor(id: string, imageSrc: ResourceStr, title: string, brief: string, webUrl: string) {
    this.id = id;
    this.imageSrc = imageSrc;
    this.title = title;
    this.brief = brief;
    this.webUrl = webUrl;
  }
}

@Component
export struct EnablementItem{
  [@Prop](/user/Prop) enablementItem: ArticleClass;

  build(){
    Column(){
      Image(this.enablementItem.imageSrc)
        .width('100%')
        .height(96)
        .borderRadius({
          topLeft: 16,
          topRight: 16
        })
        .objectFit(ImageFit.Cover)
      Text(this.enablementItem.title)
        .height(19)
        .width('100%')
        .fontSize(14)
        .textAlign(TextAlign.Start)
        .textOverflow({ overflow: TextOverflow.Ellipsis })
        .maxLines(1)
        .fontWeight(400)
        .padding({ left: 12, right: 12 })
        .margin({ top: 8 })
      Text(this.enablementItem.brief)
        .height(32)
        .width('100%')
        .fontSize(12)
        .textAlign(TextAlign.Start)
        .textOverflow({ overflow: TextOverflow.Ellipsis })
        .maxLines(2)
        .fontWeight(400)
        .fontColor('rgba(0, 0, 0, 0.6)')
        .padding({ left: 12, right: 12 })
        .margin({ top: 2 })
    }
    .width(160)
    .height(169)
    .borderRadius(16)
    .backgroundColor(Color.White)
  }
}

错误信息

The ‘@Prop’ decorated attribute ‘enablementItem’ must be of the string, number, or boolean type.