Fatal error: Uncaught Error: Class "Duplicator\Installer\Utils\InstallerUpsell" not found in /home/www/A SUPRIMER/generation-champagne2/wp-content/plugins/duplicator/src/Utils/Upsell.php:14 Stack trace: #0 {main} thrown in /home/www/A SUPRIMER/generation-champagne2/wp-content/plugins/duplicator/src/Utils/Upsell.php on line 14