在快速错误对象中找不到猫鼬验证错误

Question

我正在使用mongoose js，并尝试将新文档插入mongodb。我正在传递数据对象以使用Axios进行表达。当我收到验证错误时，快递服务器非常容易地识别问题。它返回错误productCode: ValidatorError: Path 'productCode' is required.

返回表示的错误是一个巨大的对象，我在其中找不到验证错误。有人可以告诉我我的捕获错误中缺少什么吗？

已更新

路径：Express axios Post catch error

const product = {
  productCode: '1a',
  productName: 'product x'
};

async function createProduct(product) {
  axios
    .post(
      `http://localhost:3000/myroute`,
      product
    )
    .then((res) => {
      console.log('res', res.data.productCode);
      return res.data.productCode;
    })
    .catch((error) => {
      // console.log('err', err.response);

      if (error.response) {
        /*
         * The request was made and the server responded with a
         * status code that falls out of the range of 2xx
         */
        console.log(error.response.data);
        console.log(error.response.status);
        console.log(error.response.headers);
      } else if (error.request) {
        /*
         * The request was made but no response was received, `error.request`
         * is an instance of XMLHttpRequest in the browser and an instance
         * of http.ClientRequest in Node.js
         */
        console.log(error.request);
      } else {
        // Something happened in setting up the request and triggered an Error
        console.log('Error', error.message);
      }
      // console.log(error);
    });
}

更新

路径：Server

const product = new Product(req.body);

product
  .save()
  .then((result) => {
    res.status(200).json(result);
  })
  .catch((err) => {
    console.log('err', err);
    res.status(500).json({ error: err.reason });
  });

路径：Model

var productSchema = new Schema(
  {
    productCode: {
      type: String,
      required: true
    },
    productName: { type: String, default: '' }
  },
  { collection: 'products', timestamps: true, versionKey: false }
);