How to fix Laravel Api passport not validating?

I followed the instructions to set up Laravel passport. A user table and other tables have been created. I copied a tutorial file for a register controller. I am receiving a success message in postman but no required data was entered and it is not doing any validation. Is there anything else I need to do?

<?php

namespace App\Http\Controllers\Api;

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

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

        $validatedData['password'] = bcrypt($request->password);

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

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

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

   }

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

via Chebli Mohamed