Fatal error: Uncaught Error: Class "core_external\external_api" not found in /srv/www/htdocs/moodle/lib/classes/check/external/get_result_admintree.php:36 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/classes/check/external/get_result_admintree.php on line 36