Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Definition\Exception\Exception' not found in /home/gcpsxdwf/public_html/forum.oandplibrary.org/vendor/symfony/config/Definition/Exception/InvalidDefinitionException.php:19 Stack trace: #0 {main} thrown in /home/gcpsxdwf/public_html/forum.oandplibrary.org/vendor/symfony/config/Definition/Exception/InvalidDefinitionException.php on line 19