Fatal error: Uncaught Error: Class "question_qtype_attempt_updater" not found in C:\Apache24\htdocs\moodle\question\type\calculatedmulti\db\upgradelib.php:27 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\moodle\question\type\calculatedmulti\db\upgradelib.php on line 27