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:\AppServ\Apache\2.4.69\htdocs\isha_security\vendor\laravel\framework\src\Illuminate\Foundation\Http\Exceptions\MaintenanceModeException.php on line 46

Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Exception\ServiceUnavailableHttpException" not found in C:\AppServ\Apache\2.4.69\htdocs\isha_security\vendor\laravel\framework\src\Illuminate\Foundation\Http\Exceptions\MaintenanceModeException.php:13 Stack trace: #0 {main} thrown in C:\AppServ\Apache\2.4.69\htdocs\isha_security\vendor\laravel\framework\src\Illuminate\Foundation\Http\Exceptions\MaintenanceModeException.php on line 13