Fatal error: Uncaught Error: Class 'PharIo\Manifest\ManifestElement' not found in /var/www/app/appregwebservice/vendor/phar-io/manifest/src/xml/AuthorElement.php:12 Stack trace: #0 {main} thrown in /var/www/app/appregwebservice/vendor/phar-io/manifest/src/xml/AuthorElement.php on line 12