我正在向http://localhost/projects/webdevlist/public/api/register发送发布请求，并收到405错误：

Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException
The POST method is not supported for this route. Supported methods: GET,HEAD.

routes \ api.php：

<?php

use Illuminate\Http\Request;

Route::middleware('auth:api')->get('/user',function (Request $request) {
    return $request->user();
});

Route::post('/register','Api\AuthController@register');

Api \ AuthController.php：

<?php

namespace App\Http\Controllers\Api;

use App\User;
use App\Http\Controllers\Controller;
use Illuminate\Http\Request;

class AuthController extends Controller
{
    public function register(Request $request)
    {
        $validatedData = $request->validate([
            'name' => 'required|max:55','email' => 'required|email','password' => 'required|confirmed'
        ]);

        $user = User::create($validatedData);

        $accessToken = $user->createToken('token')->accessToken;

        return response(['user' => $user,'access_token' => $accessToken]);
    }
}

如果我删除了表单验证，那么我可以很好地发布请求，并以这样的方式在邮递员中返回结果。

<?php

namespace App\Http\Controllers\Api;

use App\User;
use App\Http\Controllers\Controller;
use Illuminate\Http\Request;

class AuthController extends Controller
{
    public function register(Request $request)
    {
        return response()->json([
            $request->name,$request->email,$request->password,]);
    }
}

但是我的验证有问题。为什么验证会导致我不再能够接受POST请求？

这是我的POST请求：