Fatal error: Uncaught Error: Class "ilAssLacAbstractOperation" not found in /var/www/html/ilias/components/ILIAS/TestQuestionPool/classes/questions/LogicalAnswerCompare/Operations/ilAssLacNotEqualsOperation.php:26 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/TestQuestionPool/classes/questions/LogicalAnswerCompare/Operations/ilAssLacNotEqualsOperation.php on line 26