slake-school-service/app/Providers/AppServiceProvider.php

<?php

namespace App\Providers;

use App\Services\Crawl\ArxivRequestGate;
use Illuminate\Support\Facades\URL;
use Illuminate\Support\ServiceProvider;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     */
    public function register(): void
    {
        $this->app->singleton(ArxivRequestGate::class, fn () => ArxivRequestGate::fromConfig());
    }

    /**
     * Bootstrap any application services.
     */
    public function boot(): void
    {
        if (str_starts_with((string) config('app.url'), 'https://')) {
            URL::forceScheme('https');
        }
    }
}