Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DataCollector\DataCollector" not found in I:\www\frameworks\Laravel\vendor\symfony\http-kernel\DataCollector\DumpDataCollector.php:31 Stack trace: #0 {main} thrown in I:\www\frameworks\Laravel\vendor\symfony\http-kernel\DataCollector\DumpDataCollector.php on line 31