Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DependencyInjection\Extension' not found in /home/noct-c/www/tanakahashi/vendor/symfony/http-kernel/DependencyInjection/ConfigurableExtension.php:28 Stack trace: #0 {main} thrown in /home/noct-c/www/tanakahashi/vendor/symfony/http-kernel/DependencyInjection/ConfigurableExtension.php on line 28