Fatal error: Uncaught Error: Class "Magento\Framework\ObjectManager\Config\Reader\Dom" not found in /var/www/magento/html/generated/code/Magento/Framework/ObjectManager/Config/Reader/Dom/Proxy.php:7 Stack trace: #0 {main} thrown in /var/www/magento/html/generated/code/Magento/Framework/ObjectManager/Config/Reader/Dom/Proxy.php on line 7