重启云服务器后无法访问

[Da-Hao]

今天我重启了一下云服务器，通过hexo s可以正常启动，但是我通过浏览器访问出现了以下错误信息，求教该如何解决...
INFO Hexo is running at http://localhost:80 . Press Ctrl+C to stop.
(node:1817) [DEP0066] DeprecationWarning: OutgoingMessage.prototype._headers is deprecated
(Use node --trace-deprecation ... to show where the warning was created)
Unhandled rejection TypeError: /root/blog/themes/stun/layout/_layout.pug:1

1| -
2| var HEXO_URL = 'http://hexo.io/';
3| var STUN_URL = 'https://github.com/liuyib/hexo-theme-stun/';
4| var isNoHeader = !theme.header.enable || (is_post() && !theme.header.show_on.post);

Cannot read property 'enable' of undefined
at eval (eval at wrap (/root/blog/node_modules/pug-runtime/wrap.js:6:10), :337:32)
at template (eval at wrap (/root/blog/node_modules/pug-runtime/wrap.js:6:10), :6211:72)
at _View._compiled (/root/blog/node_modules/hexo/lib/theme/view.js:136:50)
at _View.render (/root/blog/node_modules/hexo/lib/theme/view.js:39:17)
at /root/blog/node_modules/hexo/lib/hexo/index.js:64:21
at tryCatcher (/root/blog/node_modules/bluebird/js/release/util.js:16:23)
at /root/blog/node_modules/bluebird/js/release/method.js:15:34
at RouteStream.read (/root/blog/node_modules/hexo/lib/hexo/router.js:47:5)
at RouteStream.Readable.read (internal/streams/readable.js:462:10)
at resume (internal/streams/readable.js:958:12)
at processTicksAndRejections (internal/process/task_queues.js:82:21)