- [x] I have searched the [issues](https://github.com/vueComponent/ant-design-vue/issues) of this repository and believe that this is not a duplicate. ### Version 1.4.12 ### Environment vue 2.6.11,chrome 79.0.3945.88, windows 10 ### Reproduction link [https://www.antdv.com/components/page-header-cn/](https://www.antdv.com/components/page-header-cn/) ### Steps to reproduce 在任意组件中引入<a-page-header/>都会报错 ### What is expected? 引入<a-page-header/>可以使用,页面显示与官方文档一致 ### What is actually happening? 浏览器报错显示组件未注册 <!-- generated by issue-helper. DO NOT REMOVE -->