Fatal error: Uncaught Error: Class "Laravel\Roster\Detectors\MarkerDetector" not found in C:\wamp64\houda\vendor\laravel\roster\src\Detectors\AgentsDetector.php:12 Stack trace: #0 {main} thrown in C:\wamp64\houda\vendor\laravel\roster\src\Detectors\AgentsDetector.php on line 12