问Mongoose findById命令的问题

EN

router.get("/book/:id", function(req, res){

    Book.findById(req.params.id).then(function(book){
        if (book) {
            res.json(book);
        } else {
            res.send("Book Not found");
        }
    }).catch(function(err){
        if (err) {
            console.log(err);
            res.send(err);
            throw err;
        }
    })
})

  { [CastError: Cast to ObjectId failed for value "5e441654a8b2e25bfa3d4507" at path "_id" for model "Book"]
  stringValue: '"5e441654a8b2e25bfa3d4507"',
  kind: 'ObjectId',
  value: '5e441654a8b2e25bfa3d4507',
  path: '_id',
  reason: [TypeError: hex is not a function],
  message: 'Cast to ObjectId failed for value "5e441654a8b2e25bfa3d4507" at path "_id" for model "Book"',
  name: 'CastError',
  model: Model { Book } }

ObjectId = mongoose.Types.ObjectId
ObjectId = mongoose.Schema.ObjectId 
ObjectId = mongoose.mongo.ObjectId 

id = new ObjectId(req.params.id)
Book.findById(id) 

mongodb cloud hosting, version 4
mongoose 5.8.11
nodejs 4.2.6

const schema = new mongoose.Schema({

       title: {
           type: String,
           require: true
       },
       author: {
            type: String,
            require: true
       },
       numberPages: {
            type: Number,
            require: false
       },
       publisher: {
           type: String,
           require: false
       }

});
module.exports = mongoose.model('Book', schema);