# Push Notification

If you encounter the error below while try to send a push notification, follow the steps below:

<img src="https://content.gitbook.com/content/qpzpUHpvEwV9ShSZ1v55/blobs/FDULk90h9idwjVkt2jkK/image.png" alt="" data-size="original">

### Solution

1. Go to **upgrade** menu under the **setting** menu
2. Click on **Rollback**
3. From the dialog select a number less than 24 and click on run
4. After that go back click on **Upgrade System** few times to upgrade back to latest version

![](https://content.gitbook.com/content/qpzpUHpvEwV9ShSZ1v55/blobs/16xPlJ8ckJRVdk5hPJOJ/image.png)

![](https://content.gitbook.com/content/qpzpUHpvEwV9ShSZ1v55/blobs/lsMMtbrGkqCSk3cvWK3q/image.png)
