Fatal error: Uncaught Error: Class "Laravel\Roster\Ecosystems\Ecosystem" not found in C:\wamp64\houda\vendor\laravel\roster\src\Ecosystems\JsEcosystem.php:10 Stack trace: #0 {main} thrown in C:\wamp64\houda\vendor\laravel\roster\src\Ecosystems\JsEcosystem.php on line 10