Hello,
After migrating from Joomla 541 to Joomla 6, Akeeba displays the following alert message:
Sending push notification failed: strip_tags(): Argument #1 ($string) must be of type string, null given
I then reinstalled the site using this backup. The reinstalled site (as a test site) works fine, but a new backup still displays the alert.
What should I do?
Thank you very much.