Fatal error: Uncaught Error: Class 'Symfony\Component\DependencyInjection\Container' not found in D:\workspaces\liZiPingBack\var\cache\dev\Container9OY7vru\srcApp_KernelDevDebugContainer.php:20 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\var\cache\dev\Container9OY7vru\srcApp_KernelDevDebugContainer.php on line 20