Fatal error: Uncaught Error: Class "Whoops\Handler\Handler" not found in C:\xampp\htdocs\slip\laravel-webhooks\vendor\nunomaduro\collision\src\Handler.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\slip\laravel-webhooks\vendor\nunomaduro\collision\src\Handler.php on line 15