Fatal error: Uncaught Error: Class "Symfony\Component\Config\Util\Exception\XmlParsingException" not found in /home/sourceex/public_html/pm/vendor/symfony/config/Util/Exception/InvalidXmlException.php:19 Stack trace: #0 {main} thrown in /home/sourceex/public_html/pm/vendor/symfony/config/Util/Exception/InvalidXmlException.php on line 19