php artisan schedule:run not returning response as expectation?

We have scheduled jobs in our system. It was working fine on laravel 5.8 . But now we have updated it to laravel 8. Before that when we run command php artisan schedule:run it triggers those jobs . But now it is returning this response Running scheduled command: Callback I don't know what does this means.

Here is our jobs

     $schedule->call(function () {
            \App\Jobs\Invoice\CreateInvoiceAutomatically::withChain([
                (new \App\Jobs\Invoice\FillUpInvoices)->delay(Carbon::now()->addMinutes(2))->onQueue('invoice'),


            ])->dispatch()->onQueue('invoice');

        })->everyMinute('16:47');

         $schedule->job(new \App\Jobs\Invoice\AutoSumChargesForInvoice,'invoice')->dailyAt('17:16');

    }
    ```

via Chebli Mohamed