Cannot add node to Firebase through console
<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>