Warning: require_once(/var/www/html/generated/code): failed to open stream: No such file or directory in /var/www/html/pub/errors/Descours/page.phtml on line 48

Fatal error: require_once(): Failed opening required '' (include_path='/var/www/html/generated/code:/var/www/html/vendor/magento/zendframework1/library:.:/usr/local/lib/php') in /var/www/html/pub/errors/Descours/page.phtml on line 48