Fatal error: Uncaught Error: Class "Symfony\Component\Security\Http\Firewall\AbstractListener" not found in /home/astechc1/public_html/vendor/symfony/security-http/Firewall/ChannelListener.php:29 Stack trace: #0 {main} thrown in /home/astechc1/public_html/vendor/symfony/security-http/Firewall/ChannelListener.php on line 29