Fatal error: Uncaught Error: Class "Presta\SitemapBundle\Sitemap\XmlConstraint" not found in D:\xampp\htdocs\pimcore\my-project\vendor\presta\sitemap-bundle\src\Sitemap\Sitemapindex.php:20 Stack trace: #0 {main} thrown in D:\xampp\htdocs\pimcore\my-project\vendor\presta\sitemap-bundle\src\Sitemap\Sitemapindex.php on line 20