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