Fatal error: Uncaught Error: Class 'Presta\SitemapBundle\Service\AbstractGenerator' not found in /home/lafaamicps/www/symfony/vendor/presta/sitemap-bundle/Presta/SitemapBundle/Service/Dumper.php:25 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/presta/sitemap-bundle/Presta/SitemapBundle/Service/Dumper.php on line 25