title: Firebase Cloud Messaging Notification not received in web app
body: <p>I am using FCM for notification. FCM gets triggered on creation of data from the Firebase database. I received first message. After that other consecutive messages is not received. I'm running this in a local environment. Is the problem due to the below message &quot;Billing account not configured. External network is not accessible and quotas are severely limited. Configure billing account to remove these restrictions&quot; or any other issue. Do I need to get into a billing plan for receiving messages. Working in test environment and that is the reason not moving to billing plan. If the issue is not related to billing plan can someone point any other problem with the code.</p>
  <p>Firebase function log</p>
  <pre><code>6:22:52.133 PM
  sendFollowerNotification
  Function execution started
  6:22:52.133 PM
  sendFollowerNotification
  Billing account not configured. External network is not accessible and quotas are severely limited. Configure billing account to remove these restrictions
  6:22:52.143 PM
  sendFollowerNotification
  Function execution took 10 ms, finished with status: 'ok'
  6:22:52.401 PM
  sendFollowerNotification
  1 messages were sent successfully
  </code></pre>
  <p>Node js code</p>
  <pre><code>exports.sendFollowerNotification = functions.database.ref('/notification/message/{gId}/{pId}')
          .onCreate(async (change, context) =&gt; {
      
            //console.log('Group id:', context.params.gId,&quot; Push ID:&quot;,context.params.pId, &quot;Change&quot;,change);
            
            const notificationData =  change.val();
            var topic = notificationData.topic;
            var title = notificationData.title;
            var body = notificationData.body;
            var registrationTokens = notificationData.tokens;
      
            const message = {
              notification: {
                title: title,
                body: body
              },
              tokens: registrationTokens,
            };
      
            admin.messaging().sendMulticast(message)
            .then((response) =&gt; {
              // Response is a message ID string.
              console.log(response.successCount + ' messages were sent successfully');
            })
            .catch((error) =&gt; {
              console.log('Error sending message:', error);
            });
            
          });
  </code></pre>