Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Util\Exception\XmlParsingException' not found in /home/gcpsxdwf/public_html/forum.oandplibrary.org/vendor/symfony/config/Util/Exception/InvalidXmlException.php:20 Stack trace: #0 {main} thrown in /home/gcpsxdwf/public_html/forum.oandplibrary.org/vendor/symfony/config/Util/Exception/InvalidXmlException.php on line 20