TypeError: ejs:317
    315|                                             <div class="tail category_box" data-columnid="<%= article.columnID %>">
    316|                                                 <span  class="category">[<a> <%= article.columnName %></a>]</span>
 >> 317|                                                 <span class="date"><%- article.publishTime.slice(0,10) %></span>
    318|                                             </div>
    319|                                         </li>
    320|                                         <% }) %>

Cannot read properties of null (reading 'slice')
    at eval (eval at compile (/root/webmaker/node_modules/ejs/lib/ejs.js:652:12), <anonymous>:329:37)
    at Array.forEach (<anonymous>)
    at eval (eval at compile (/root/webmaker/node_modules/ejs/lib/ejs.js:652:12), <anonymous>:296:91)
    at anonymous (/root/webmaker/node_modules/ejs/lib/ejs.js:682:17)
    at exports.render (/root/webmaker/node_modules/ejs/lib/ejs.js:419:37)
    at /root/webmaker/templates/root.js:297:40
    at /root/webmaker/common/mtTemplate.js:697:8
    at /root/webmaker/common/mtTemplate.js:689:9
    at /root/webmaker/node_modules/async/dist/async.js:1143:9
    at /root/webmaker/node_modules/async/dist/async.js:473:16