Fatal error: Uncaught Error: Class "PHPePub\Core\Logger" not found in /var/www/alternc/a/antrugeon/nuage/wallabag/vendor/wallabag/phpepub/tests/EPub.Example2b.php:36 Stack trace: #0 {main} thrown in /var/www/alternc/a/antrugeon/nuage/wallabag/vendor/wallabag/phpepub/tests/EPub.Example2b.php on line 36