VK(vkontakte)API错误:尝试发布到墙时拒绝访问

我通过使用以下URL授权用户来获得令牌:

const fetch = require('node-fetch');

const VK_CLIENT_ID = '1231231';

const photos = 4;
const wall = 8192;
const offline = 65536;
const scope = offline + wall + photos;

const URL = `https://oauth.vk.com/authorize?client_id=${VK_CLIENT_ID}&display=popup&redirect_uri=http://example.com/auth/vk&scope=${scope}&response_type=token&v=5.78`;

const accessToken = '...';
const ownerID = '212121212';

fetch(
  `https://api.vk.com/method/wall.post?v=5.78&message=test_api&owner_id=${ownerID}&access_token=${accessToken}`
)
  .then(res => res.text())
  .then(body => console.log(body));

{
  error: {
    error_code: 15,
    error_msg: "Access denied: no access to call this method",
    request_params: [
      { key: "oauth", value: "1" },
      { key: "method", value: "wall.post" },
      { key: "v", value: "5.78" },
      { key: "message", value: "test_api" },
      { key: "owner_id", value: "184591202" }
    ]
  }
}