Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DependencyInjection\Extension" not found in D:\Apache24\www\api.print.nxytec.cn\back\vendor\symfony\http-kernel\DependencyInjection\ConfigurableExtension.php:28 Stack trace: #0 {main} thrown in D:\Apache24\www\api.print.nxytec.cn\back\vendor\symfony\http-kernel\DependencyInjection\ConfigurableExtension.php on line 28