Cannot run schedule tasks.

The Terminal said "No scheduled commands are ready to run." every time when I executed "php artisan schedule:run".

Here is my /app/Console/Kernel.php

<?php

namespace App\Console;

use Illuminate\Console\Scheduling\Schedule;
use Illuminate\Foundation\Console\Kernel as ConsoleKernel;

use App\CardRecord;
use Carbon\Carbon;
use App\TimeNode;

class Kernel extends ConsoleKernel
{
    /**
     * The Artisan commands provided by your application.
     *
     * @var array
     */
    protected $commands = [
        \App\Console\Commands\SyncCardRecord::class,
        \App\Console\Commands\SyncCarRecord::class,
        \App\Console\Commands\AbsenceSimCheck::class,
        \App\Console\Commands\UpdateDailyCheckStatus::class,
    ];

    /**
     * Define the application's command schedule.
     *
     * @param  \Illuminate\Console\Scheduling\Schedule  $schedule
     * @return void
     */
    protected function schedule(Schedule $schedule)
    {
        // Sync card records to records hourly
        $schedule->command('sync:card')
                    ->hourly()
                    ->timezone('Asia/Shanghai')
                    ->withoutOverlapping()
                    ->evenInMaintenanceMode();

        // Sync car records to records hourly
        $schedule->command('sync:car')
                    ->timezone('Asia/Shanghai')
                    ->hourly()
                    ->withoutOverlapping()
                    ->evenInMaintenanceMode();

        // Simulate check for absence-valid employees
        // At am_start & pm_away

        $amStart = TimeNode::where('name', '=', 'am_start')->first();
        $pmAway = TimeNode::where('name', '=', 'pm_away')->first();
            // Create "Hour:minute" strings
        $am_start_hm = $amStart->hour . ':' . $amStart->minute;
        $pm_away_hm = $pmAway->hour . ':' . $pmAway->minute;

        $schedule->command('absence:check')
                    ->timezone('Asia/Shanghai')
                    ->dailyAt($am_start_hm)
                    ->dailyAt($pm_away_hm)
                    ->withoutOverlapping();

        // Update daily check status daily at pm_end

        $pmEnd = TimeNode::where('name', '=', 'pm_end')->first();
        $pm_end_hm = $pmEnd->hour . ':' . $pmEnd->minute;

        $schedule->command('daily:status')
                    ->timezone('Asia/Shanghai')
                    ->dailyAt($pm_end_hm)
                    ->withoutOverlapping();

    }

    /**
     * Register the Closure based commands for the application.
     *
     * @return void
     */
    protected function commands()
    {
        require base_path('routes/console.php');
    }
}

My laravel version is 5.4.

Addition: Some schedule tasks can be run after I change the function "hourly()" to "everyMinute()".

Is the problem of I cannot write schedule code like this?

Any help will be appreciated!

laravel / framework

Cannot run schedule tasks. #20942