Fatal error: Uncaught Error: Class "core\output\renderer_factory\renderer_factory_base" not found in /srv/www/htdocs/moodle/lib/classes/output/renderer_factory/standard_renderer_factory.php:34 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/classes/output/renderer_factory/standard_renderer_factory.php on line 34