App doesn't load: Cannot read 'path' property of undefined

[1papaya]

Steps taken:

• git clone https://github.com/WorldBank-Transport/ram.git && cd ram
• yarn install
• yarn run serve

After executing yarn run serve it throws an error (below) and the site at localhost:3000 doesn't load.

Metalsmith error: { TypeError: /home/user/proj/ram/ram/app/layouts/post.html:20
    18|             </a>
    19|           </div>
 >> 20|           <%- include('../includes/navigation') %>
    21|         </div>
    22|       </header>
    23| 

/home/user/proj/ram/ram/app/includes/navigation.ejs:11
    9|     <section class="ppn__section">
    10|       <h3 class="ppn__section-title"><%= site.sectionsMeta[k] %></h3>
 >> 11|       <%- include('../includes/nav-item', {children: sections[k].children}) %>
    12|     </section>
    13|     <% }) %>
    14| 

/home/user/proj/ram/ram/app/includes/nav-item.ejs:16
    14|       <% var activeClass = children[k].item.path === path ? 'ppn__menu-item--active' : '' %>
    15|       <a href="<%- site.baseurl %>/<%= children[k].item.path %>" title="Go to page" class="ppn__menu-item <%- activeClass %>"><%= children[k].item.title %></a>
 >> 16|       <%- include('nav-item', {children: children[k].children || []}) %>
    17|   </li>
    18|   <% }) %>
    19| </ul>

/home/user/proj/ram/ram/app/includes/nav-item.ejs:14
    12|   <% keys.forEach(function(k) { %>
    13|   <li>
 >> 14|       <% var activeClass = children[k].item.path === path ? 'ppn__menu-item--active' : '' %>
    15|       <a href="<%- site.baseurl %>/<%= children[k].item.path %>" title="Go to page" class="ppn__menu-item <%- activeClass %>"><%= children[k].item.title %></a>
    16|       <%- include('nav-item', {children: children[k].children || []}) %>
    17|   </li>

Cannot read property 'path' of undefined
    at eval (eval at compile (/home/user/proj/ram/ram/node_modules/ejs/lib/ejs.js:524:12), <anonymous>:27:42)
    at Array.forEach (native)
    at eval (eval at compile (/home/user/proj/ram/ram/node_modules/ejs/lib/ejs.js:524:12), <anonymous>:24:13)
    at returnedFn (/home/user/proj/ram/ram/node_modules/ejs/lib/ejs.js:555:17)
    at include (/home/user/proj/ram/ram/node_modules/ejs/lib/ejs.js:553:39)
    at eval (eval at compile (/home/user/proj/ram/ram/node_modules/ejs/lib/ejs.js:524:12), <anonymous>:39:17)
    at Array.forEach (native)
    at eval (eval at compile (/home/user/proj/ram/ram/node_modules/ejs/lib/ejs.js:524:12), <anonymous>:24:13)
    at returnedFn (/home/user/proj/ram/ram/node_modules/ejs/lib/ejs.js:555:17)
    at include (/home/user/proj/ram/ram/node_modules/ejs/lib/ejs.js:553:39)
    at eval (eval at compile (/home/user/proj/ram/ram/node_modules/ejs/lib/ejs.js:524:12), <anonymous>:23:17)
    at Array.forEach (native)
    at eval (eval at compile (/home/user/proj/ram/ram/node_modules/ejs/lib/ejs.js:524:12), <anonymous>:17:16)
    at returnedFn (/home/user/proj/ram/ram/node_modules/ejs/lib/ejs.js:555:17)
    at include (/home/user/proj/ram/ram/node_modules/ejs/lib/ejs.js:553:39)
    at eval (eval at compile (/home/user/proj/ram/ram/node_modules/ejs/lib/ejs.js:524:12), <anonymous>:29:17) path: '/home/user/proj/ram/ram/app/layouts/post.html' }