HarmonyOS build根组件不支持使用自定义组件

报错如下

In an '@Entry' decorated component, the 'build' function can have only one root node, which must be a container component. <ArkTSCheck>

错误代码：

@Entry
@Component
struct QuickPrescriptionAddPage {
  build() {
    JKContentLayout()
  }
}
@Component
export struct JKContentLayout {
  build() {
    Column() {

    }
    .backgroundColor($r("app.color.jk_common_bg"))
    .width("100%")
    .height("100%")
  }
}