如何创建nodejs和mongo creat

Question

我想使用nodejs和mongo打印数据收集，但是它给出了一个错误，该问题的解决方案是什么？

示例架构；

const bookSchema = new mongoose.Schema({
  name: {
    type: String,
    required: true,
  },

const BookCollection = mongoose.model("Book", BookSchema)

module.exports = { BookCollection, bookSchema }

nodejs代码;

route.get("/books", (req, res, next) => {

    BookCollection.create({
      name: 'Ayn Rand'
    })

错误：

(node:5657) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:5657) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.