title: Firebase cloud functions not being triggered
body: <p>I am trying to set up cloud functions in firebase, and couldn't get it to run for when a user is followed, so tried setting up a simple project for creating a user, and am now trying for any change on the users branch of the database and it is still never triggered. The function shows up in my dashboard, but never triggers.</p>
  <pre><code>const functions = require('firebase-functions');
  const admin = require('firebase-admin');
  admin.initializeApp();
  
  exports.onUserCreateNotification = functions.database.ref('/users/')
      .onWrite((change, context) =&gt; {
        //const userUid = context.params.followedUid;
        console.log('We have a new user UID:');
    
      });
  </code></pre>