Undefined constant "Spatie\Backup\Tasks\Backup\SIGINT"

[DevHoracioRodriguez]

After successfully complete spatie/nova-backup-tool installation, the Create Backup button shows an error and doesn't create backup. Also, happens with only-db and only-files options.

I wonder if config.nova-backup-tool.queue need a value.
/* * Queue to use for the jobs to run through. */ 'queue' => null,

Terminal

php artisan backup:run and php artisan backup:list executes with no problem at all.

Composer
"require": { "php": "^8.0.2", "guzzlehttp/guzzle": "^7.2", "laravel/framework": "^9.19", "laravel/nova": "~4.0", "laravel/sanctum": "^3.0", "laravel/tinker": "^2.7", "spatie/laravel-backup": "^8.1", "spatie/nova-backup-tool": "^5.0" }, "require-dev": { "fakerphp/faker": "^1.9.1", "laravel/pint": "^1.0", "laravel/sail": "^1.0.1", "mockery/mockery": "^1.4.4", "nunomaduro/collision": "^6.1", "phpunit/phpunit": "^9.5.10", "spatie/laravel-ignition": "^1.0" },

[DevHoracioRodriguez]

As Spatie's documentation state: "Currently, this module will not function on non-Unix platforms (Windows)".

https://www.php.net/manual/en/pcntl.installation.php