PianoTime/app/Http/Controllers/Api/LoginController.php

<?php

namespace App\Http\Controllers\Api;

use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use Illuminate\Support\Facades\Log;

class LoginController extends Controller
{
    public function login(Request $request)
    {
        dd('ok');
        Log::info($request->all());
    }
}