ldc-gen-game-web/app/Http/Controllers/Fo/HowToPlayController.php

<?php

namespace App\Http\Controllers\Fo;

use App\Http\Controllers\Controller;

class HowToPlayController extends Controller
{
    /**
     * index
     *
     * @return \Illuminate\View\View|Illuminate\Http\RedirectResponse
     */
    public function index()
    {
        if (view()->exists('theme::fo.basic.how-to-play')) {
            return view('theme::fo.basic.how-to-play');
        }
        return redirect()->route('fo.home');
    }
}