Fatal error: Uncaught Error: Class "mikehaertl\shellcommand\Command" not found in /var/www/html/app/vendor/mikehaertl/phpwkhtmltopdf/src/Command.php:15 Stack trace: #0 {main} thrown in /var/www/html/app/vendor/mikehaertl/phpwkhtmltopdf/src/Command.php on line 15