问来自RESTful接口的Post请求给出UnhandledPromiseRejectionWarning: ValidationError:产品验证失败:错误

EN

const express = require('express')
const mongoose = require('mongoose') 
const bodyParser = require("body-parser");

const app = express()
app.use(bodyParser.urlencoded({extended: true}));
mongoose.connect('mongodb://localhost:27017/playDB', {useNewUrlParser: true, useUnifiedTopology: true})

const playSchema = new mongoose.Schema({
    name: {
        type: String,
        required: [true, 'Please enter product name'],
    },
    price : {
        type: Number,
        required: [true, 'Please enter product price'],
    },
    description: {
        type: String,
        required: [true, 'Please enter product description']
    },
    category: {
        type: String,
        required: [true, 'Please enter the product category'],
    },
    seller: {
        type: String,
        required: [true, 'Please enter product seller']
    },
    stock: {
        type: Number,
        required: [true, 'Please enter product stock'],
    }
})

const Product = mongoose.model('Product', playSchema)

//get all products

app.route("/products")
        .post(async function(req, res, next){
          const product = await Product.create(req.body);

          res.send({
              success: true,
              product
          })
            
        })


app.listen(3000, function(){
    console.log('server is running')
})