title: node-red not showing nodes (property length undefined)
body: <p>After successful installation of node-red, i have encountered a strange issue. 
  No nodes are displayed and there is undefined length issue on console.
  <a href="https://i.stack.imgur.com/wv4KC.png" rel="nofollow"><img src="https://i.stack.imgur.com/wv4KC.png" alt="enter image description here"></a></p>