Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DependencyInjection\Extension" not found in /home/exklusivbeautysa/public_html/vendor/contao/installation-bundle/src/DependencyInjection/ContaoInstallationExtension.php:20 Stack trace: #0 {main} thrown in /home/exklusivbeautysa/public_html/vendor/contao/installation-bundle/src/DependencyInjection/ContaoInstallationExtension.php on line 20