Fatal error: Uncaught Error: Class 'Symfony\Component\CssSelector\Exception\ParseException' not found in /home/app/htdocs/message_gateway/vendor/symfony/css-selector/Exception/SyntaxErrorException.php:24 Stack trace: #0 {main} thrown in /home/app/htdocs/message_gateway/vendor/symfony/css-selector/Exception/SyntaxErrorException.php on line 24