Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\Client' not found in D:\workspaces\liZiPingBack\vendor\symfony\http-kernel\HttpKernelBrowser.php:25 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\symfony\http-kernel\HttpKernelBrowser.php on line 25