Fatal error: Uncaught Error: Class "core_reportbuilder\system_report" not found in C:\Apache24\htdocs\moodle\cohort\classes\reportbuilder\local\systemreports\cohorts.php:40 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\moodle\cohort\classes\reportbuilder\local\systemreports\cohorts.php on line 40