Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DataCollector\DataCollector' not found in E:\xampp\htdocs\vendor\symfony\http-kernel\DataCollector\DumpDataCollector.php:29 Stack trace: #0 {main} thrown in E:\xampp\htdocs\vendor\symfony\http-kernel\DataCollector\DumpDataCollector.php on line 29