I'm getting the notifications now but I still get this error each time I get the notification:

#0 /home/djcaa/web/website.org/public_html/modules/boonex/notifications/classes/BxNtfsCronQueue.php(39): BxNtfsModule->sendNotificationPush()

#1 /home/djcaa/web/website.org/public_html/periodic/cron.php(121): BxNtfsCronQueue->processing()

#2 /home/djcaa/web/website.org/public_html/periodic/cron.php(159): runJob()

#3 {main}

 thrown in /home/djcaa/web/website.org/public_html/modules/boonex/notifications/classes/BxNtfsModule.php on line 702

Any idea how to fix?