Report on scheduled mailing fails with Notice: Undefined property: CRM_Mailing_BAO_Mailing::$mailing_job_start_date in <joomla_root>/administrator/components/com_civicrm/civicrm/CRM/Mailing/BAO/Mailing.php on line 2031
This occurs in Joomla after upgrading to CiviCRM 5.19.0. Line 175 in /administrator/components/com_civicrm/civicrm/CRM/Mailing/DAO/MailingJob.php should read: 'start_date' => [ not 'mailing_job_start_date' => [