Fatal error: Uncaught Error: Interface "PHPStan\Rules\Rule" not found in /var/www/html/ilias/scripts/PHPStan/Rules/LegacyClassUsageRule.php:28 Stack trace: #0 {main} thrown in /var/www/html/ilias/scripts/PHPStan/Rules/LegacyClassUsageRule.php on line 28