Fatal error: Uncaught Error: Class "core_external\external_api" not found in /home/andinaes/public_html/aulavirtual/mod/data/classes/external/delete_saved_preset.php:37 Stack trace: #0 {main} thrown in /home/andinaes/public_html/aulavirtual/mod/data/classes/external/delete_saved_preset.php on line 37