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Fatal error: Uncaught TypeError: array_slice(): Argument #1 ($array) must be of type array, null given in /var/www/html/app/Controller/Cron/CronAlarmController.class.php:24 Stack trace: #0 /var/www/html/app/Controller/Cron/CronAlarmController.class.php(24): array_slice() #1 /var/www/html/public/cron/send-alert-alarm.php(9): CronAlarmController->sendAlertAlarm() #2 {main} thrown in /var/www/html/app/Controller/Cron/CronAlarmController.class.php on line 24