Deprecated: Illuminate\Foundation\Http\Exceptions\MaintenanceModeException::__construct(): Implicitly marking parameter $previous as nullable is deprecated, the explicit nullable type must be used instead in C:\Apache24\htdocs\laravelcurso\vendor\laravel\framework\src\Illuminate\Foundation\Http\Exceptions\MaintenanceModeException.php on line 42

Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Exception\ServiceUnavailableHttpException" not found in C:\Apache24\htdocs\laravelcurso\vendor\laravel\framework\src\Illuminate\Foundation\Http\Exceptions\MaintenanceModeException.php:9 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\laravelcurso\vendor\laravel\framework\src\Illuminate\Foundation\Http\Exceptions\MaintenanceModeException.php on line 9