Fatal error: Uncaught Error: Class "App\Engine\LegacyHandler\LegacyHandler" not found in /var/www/crm_killing_ninja/core/modules/Campaigns/Statistics/CampaignSendStatus.php:44 Stack trace: #0 {main} thrown in /var/www/crm_killing_ninja/core/modules/Campaigns/Statistics/CampaignSendStatus.php on line 44