Fatal error: Uncaught Error: Class 'Symfony\Component\BrowserKit\AbstractBrowser' not found in C:\xampp\htdocs\admin\vendor\symfony\http-kernel\HttpKernelBrowser.php:31 Stack trace: #0 {main} thrown in C:\xampp\htdocs\admin\vendor\symfony\http-kernel\HttpKernelBrowser.php on line 31