Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DependencyInjection\Extension' not found in C:\xampp\htdocs\admin\vendor\symfony\http-kernel\DependencyInjection\ConfigurableExtension.php:28
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\admin\vendor\symfony\http-kernel\DependencyInjection\ConfigurableExtension.php on line 28