Fatal error: Uncaught Error: Class "Presta\SitemapBundle\Service\AbstractGenerator" not found in D:\xampp\htdocs\pimcore\my-project\vendor\presta\sitemap-bundle\src\Service\Generator.php:22 Stack trace: #0 {main} thrown in D:\xampp\htdocs\pimcore\my-project\vendor\presta\sitemap-bundle\src\Service\Generator.php on line 22