title: Cannot add node to Firebase through console
body: <p>I have a Firebase project with 2 mobile apps:</p>
  
  <ol>
  <li>FriendlyChat example from Firebase/Google (messages) - created first</li>
  <li>Grocery Items list (grocery-items) - trying to create second</li>
  </ol>
  
  <p>You can see the messages node already there with some test messages inside.</p>
  
  <p><a href="https://i.stack.imgur.com/nYBzI.png" rel="noreferrer"><img src="https://i.stack.imgur.com/nYBzI.png" alt="enter image description here"></a></p>
  
  <p>But when I try to add a child to the <code>appId</code> node, I give it a name "grocery-items" and I click on <strong>ADD</strong>, but the node does not get added.  It just disappears.</p>
  
  <p>Why can't I add the grocery-items node?</p>