运行到鸿蒙报错 Cannot read property observeComponentCreation2 of undefined

UTS运行到鸿蒙报如下错误：
Cannot read property observeComponentCreation2 of undefined

index.uts代码如下：

import { AddFun } from '../interface.uts'  
import { button } from "./button.ets"  
export const addFun : AddFun = function () : void {  
 button.ChangeArkts()  
}

button.ets代码如下

import { MainPage } from 'library'  
import { UIContext, ComponentContent } from '@kit.ArkUI';  

@Entry  
@Component  
struct ButtonComponent {  
          build() {  
            Row() {  
              // 引用HAR的ArkUI组件  
              MainPage()  
            }  
            .height('100%')  
          }  
}  

@Builder  
function RegisterBuilder() {  
  ButtonComponent()  
}  

export class button {  
     static ChangeArkts() {  
        RegisterBuilder()  
       // wrapBuilder(RegisterBuilder)  
      }  
}