Fatal error: Uncaught Error: Using $this when not in object context in /var/www/html/ng-crm/yiiapp/backend/views/pdf/windowcard_template_user_logs_summary.php:2 Stack trace: #0 {main} thrown in /var/www/html/ng-crm/yiiapp/backend/views/pdf/windowcard_template_user_logs_summary.php on line 2