Fatal error: Uncaught Error: Class "core_renderer" not found in C:\xampp\htdocs\laberit01\html\moodle\theme\lambda\renderers\core_renderer.php:24 Stack trace: #0 {main} thrown in C:\xampp\htdocs\laberit01\html\moodle\theme\lambda\renderers\core_renderer.php on line 24