Fatal error: Uncaught Error: Class 'Symfony\Component\CssSelector\XPath\Extension\AbstractExtension' not found in /home/app/htdocs/message_gateway/vendor/symfony/css-selector/XPath/Extension/AttributeMatchingExtension.php:27
Stack trace:
#0 {main}
thrown in /home/app/htdocs/message_gateway/vendor/symfony/css-selector/XPath/Extension/AttributeMatchingExtension.php on line 27