vuepress build提示YAMLException: end of the stream or a document separator is expected at line 7, colu

YAMLException: end of the stream or a document separator is expected at line 7, column 9:
    features:
            ^
    at generateError (/usr/lib/node_modules/vuepress/node_modules/js-yaml/lib/js-yaml/loader.js:167:10)
    at throwError (/usr/lib/node_modules/vuepress/node_modules/js-yaml/lib/js-yaml/loader.js:173:9)
    at readDocument (/usr/lib/node_modules/vuepress/node_modules/js-yaml/lib/js-yaml/loader.js:1545:5)
    at loadDocuments (/usr/lib/node_modules/vuepress/node_modules/js-yaml/lib/js-yaml/loader.js:1588:5)
    at load (/usr/lib/node_modules/vuepress/node_modules/js-yaml/lib/js-yaml/loader.js:1614:19)
    at Object.safeLoad (/usr/lib/node_modules/vuepress/node_modules/js-yaml/lib/js-yaml/loader.js:1637:10)
    at module.exports (/usr/lib/node_modules/vuepress/node_modules/gray-matter/lib/parse.js:12:17)
    at parseMatter (/usr/lib/node_modules/vuepress/node_modules/gray-matter/index.js:109:17)
    at Object.matter [as default] (/usr/lib/node_modules/vuepress/node_modules/gray-matter/index.js:50:10)
    at parseFrontmatter (/usr/lib/node_modules/vuepress/node_modules/@vuepress/shared-utils/lib/parseFrontmatter.js:8:33)
    at Page.process (/usr/lib/node_modules/vuepress/node_modules/@vuepress/core/lib/node/Page.js:106:44)
    at async App.addPage (/usr/lib/node_modules/vuepress/node_modules/@vuepress/core/lib/node/App.js:354:5)
    at async /usr/lib/node_modules/vuepress/node_modules/@vuepress/core/lib/node/App.js:339:7
    at async Promise.all (index 0)
    at async App.resolvePages (/usr/lib/node_modules/vuepress/node_modules/@vuepress/core/lib/node/App.js:337:5)
    at async App.process (/usr/lib/node_modules/vuepress/node_modules/@vuepress/core/lib/node/App.js:115:5)

---
home:true
heroImage:/hero.png
heroText:Hero标题
tagline:Hero副标题
actionText:快速上手→
actionLink:/zh/guide/
features:
- title:简洁至上
  details:以Markdown为中心的项目结构，以最少的配置帮助你专注于写作。
- title:Vue驱动
  details:享受Vue+ webpack 的开发体验，在Markdown中使用Vue组件，同时可以使用Vue来开发自定义主题。
- title:高性能
  details:VuePress为每个页面预渲染生成静态的 HTML，同时在页面被加载的时候，将作为 SPA 运行。
footer: MIT Licensed|Copyright©2018-present EvanYou
---root@iZm5e6dk6exl71zbx327zvZ:~/my_blogs/docs# 

---
home: true
heroText: Hero标题
tagline: Hero副标题
actionText: 快速上手→
actionLink: /README.md
features:
- title: 简洁至上
  details: 以Markdown为中心的项目结构，以最少的配置帮助你专注于写作。
- title: Vue驱动
  details: 享受Vue+ webpack 的开发体验，在Markdown中使用Vue组件，同时可以使用Vue来开发自定义主题。
- title: 高性能
  details: VuePress为每个页面预渲染生成静态的 HTML，同时在页面被加载的时候，将作为 SPA 运行。
footer: MIT Licensed|Copyright©2020-present 湘ICP备 20001035号
---