I already wrote this in Disussion :

https://unacms.com/d/14-rc3-issue-push-notification-not-working

I've changed both files ( ../inc/classes/BxDolQueuePush.php and .../modules/boonex/notfications/classes/BxNtfsModule.php ) enabled some push notifications since all Push notification was turned off due to this Discussion: here ( https://unacms.com/d/php-fatal-error-notifications )

Now the PHP Fatal errors are gone but no Push notification at all....