The problem I encountered is probably this. The container environment runs Laravel.
There is no HTTPS in the container, which causes Laravel to transmit the form without https.
Add the following syntax to the boot of AppServiceProvider

< code class="language-php">\URL::forceScheme('https');

Probably like this

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        //
    }

    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        
                \URL::forceScheme('https');
        
    }

}