Cannot read property 'enable' of undefined +hexo

hexo s没有出错，直接可以去自己博客，但是页面出现不来，然后就显示如下错误

D:\hexo>hexo s
INFO  Validating config
INFO  Start processing
INFO  Hexo is running at http://localhost:4000 . Press Ctrl+C to stop.
Unhandled rejection TypeError: D:\hexo\themes\hexo-theme-matery-master\layout\index.ejs:2
    1| <% if (is_home() && page.current === 1) { %>
 >> 2| <%- partial('_partial/index-cover') %>
    3| <% } else { %>
    4|     <%- partial('_partial/bg-cover') %>
    5| <% } %>

D:\hexo\themes\hexo-theme-matery-master\layout\_partial\index-cover.ejs:68
    66|
    67|             <div class="cover-btns">
 >> 68|                 <a href="<%=
    69|                         [theme.dream, theme.music, theme.video, theme.recommend]
    70|                                 .every(i=>i.enable)? "#indexCard": "#articles"
    71|                         %>" class="waves-effect waves-light btn">

Cannot read property 'enable' of undefined
    at eval (D:\hexo\themes\hexo-theme-matery-master\layout\_partial\index-cover.ejs:34:45)
    at Array.every (<anonymous>)
    at eval (D:\hexo\themes\hexo-theme-matery-master\layout\_partial\index-cover.ejs:34:34)
    at index-cover (D:\hexo\node_modules\ejs\lib\ejs.js:682:17)
    at _View._compiledSync (D:\hexo\node_modules\hexo\lib\theme\view.js:132:24)
    at _View.renderSync (D:\hexo\node_modules\hexo\lib\theme\view.js:59:25)
    at Object.partial (D:\hexo\node_modules\hexo\lib\plugins\helper\partial.js:34:15)
    at eval (D:\hexo\themes\hexo-theme-matery-master\layout\index.ejs:11:17)
    at index (D:\hexo\node_modules\ejs\lib\ejs.js:682:17)
    at _View._compiled (D:\hexo\node_modules\hexo\lib\theme\view.js:136:50)
    at _View.render (D:\hexo\node_modules\hexo\lib\theme\view.js:39:17)
    at D:\hexo\node_modules\hexo\lib\hexo\index.js:64:21
    at tryCatcher (D:\hexo\node_modules\bluebird\js\release\util.js:16:23)
    at D:\hexo\node_modules\bluebird\js\release\method.js:15:34
    at RouteStream._read (D:\hexo\node_modules\hexo\lib\hexo\router.js:47:5)
    at RouteStream.Readable.read (_stream_readable.js:469:10)
    at resume_ (_stream_readable.js:983:12)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)

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D:\hexo\themes\hexo-theme-matery-master\layout\_partial\index-cover.ejs:68  第68行，   [theme.dream, theme.music, theme.video, theme.recommend]里面确定都有enable树形吗？可以这样！i.enable？"#indexCard": "#articles"