方法不允许Http Exception laravel 5.4

Vee*_*one 5 php laravel-5

使用以下代码在laravel简单控制器类中获取错误

MethodNotAllowedHttpException

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use DB;
use app\Http\Requests;
use Illuminate\Support\Facades\Auth;


class ProfileController extends Controller
{


    private $userId;

    public function __construct()
    {
         $this->userId = Auth::id();    
    }

}
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路线:

Route::post('user_profile','ProfileController@insert');
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致电: <form action="/user_profile" method="post">

Vee*_*one 0

我必须跑

php artisan config:clear
php artisan cache:clear
php artisan route:clear
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