I learn more about node.js and fastify when ‘send request’ the request return this message : “Expected double-quoted property name in JSON at position 32”

how i know where is the problem?

the code :

import { fastify } from "fastify"
import { DatabaseMemory } from "./database-memory.js"

const server = fastify()

const database = new DatabaseMemory()

server.post("/videos", (request, reply) => {
  const body = request.body

  console.log(body)

  database.create({
    title: "Video 01",
    description: "teste",
    duration: 180,
  })

  return reply.status(201).send()
})

server.get("/videos", () => {
  return "video 01"
})

server.put("/videos/:id", () => {
  return "esse video"
})

server.delete("/videos/:id", () => {
  return "esse video"
})

server.listen({
  port: 1313,
})

i tried put the double-quoted but dont’s work.