Xboard/app/Providers/SettingServiceProvider.php

<?php

namespace App\Providers;

use App\Support\Setting;
use Illuminate\Support\Facades\URL;
use Illuminate\Support\ServiceProvider;
use Illuminate\Contracts\Foundation\Application;
use Illuminate\Support\Facades\Log;

class SettingServiceProvider extends ServiceProvider
{
    /**
     * Register services.
     *
     * @return void
     */
    public function register()
    {
        $this->app->scoped(Setting::class, function (Application $app) {
            return new Setting();
        });

    }

    /**
     * Bootstrap services.
     *
     * @return void
     */
    public function boot()
    {
        if ($appUrl = admin_setting('app_url')) {
            URL::forceRootUrl($appUrl);
        }
    }
}