Fatal error: Uncaught Error: Class "Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher" not found in C:\Apache24\htdocs\laravelcurso\vendor\symfony\http-kernel\Tests\Fixtures\TestEventDispatcher.php:16 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\laravelcurso\vendor\symfony\http-kernel\Tests\Fixtures\TestEventDispatcher.php on line 16