Q1：This custom component must have a ‘build’ function.

源码

@Component
export default struct ProgressEditPanel {
}

问题
源码中没有出现build方法
解决

@Component
export default struct ProgressEditPanel {
build() {}
}

Q2：page_title is not translated into en_US(American English)

提示：page_title is not translated into en_US(American English)
修改：三个string.json文件都需要出现相同的name和value才行，如果根据提示进行修改

Q3：Module ‘“…/CustomComponent/CustomButton”’ declares ‘CustomButton’ locally, but it is not exported.

源码

struct CustomButton {}

问题
没有将结构跑出来
解决

export struct CustomButton {}