Fatal error: Uncaught Error: Class 'PHPePub\Core\Logger' not found in /home/services/httpd/vhosts/sites.tombas.net/ssl/wallabag-release-2.3.8/vendor/grandt/phpepub/tests/EPub.Example1.php:37 Stack trace: #0 {main} thrown in /home/services/httpd/vhosts/sites.tombas.net/ssl/wallabag-release-2.3.8/vendor/grandt/phpepub/tests/EPub.Example1.php on line 37