打开预览Preview failed. Unable to start the previewer. Open PreviewerLog to check for details.
[Compile Result] ArkTS:ERROR File: D:/DevEco/Linliyizhan/entry/src/main/ets/pages/My.ets
[Compile Result] A page configured in 'main_pages.json' must have one and only one '@Entry' decorator.
[Compile Result] Compile error occurred. Fix it based on the above message.
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单从错误信息看，在My.ets里面：
首先，有一个方法返回值不是void，也不是任意类型，但它最终没有返回值：[Compile Result] A function whose declared type is neither 'void' nor 'any' must return a value；
其次，使用了两个及以上@Entry修饰符，而Page里面只允许有一个@Entry修饰符：[Compile Result] A page configured in 'main_pages.json' must have one and only one '@Entry' decorator；
最后，build()方法内部应该有一个根容器组件：[Compile Result] There should have a root container component.