Fatal error: Uncaught Error: Class "Symfony\Component\Config\Util\Exception\XmlParsingException" not found in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\config\Util\Exception\InvalidXmlException.php:20 Stack trace: #0 {main} thrown in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\config\Util\Exception\InvalidXmlException.php on line 20