Warning: require_once(./vendor/composer/vendor/autoload.php): Failed to open stream: No such file or directory in /var/www/html/ilias/components/ILIAS/Data/tests/AlphanumericTest.php on line 16

Fatal error: Uncaught Error: Failed opening required './vendor/composer/vendor/autoload.php' (include_path='.:/usr/share/php') in /var/www/html/ilias/components/ILIAS/Data/tests/AlphanumericTest.php:16 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Data/tests/AlphanumericTest.php on line 16