thoughts on lab-3.1 LFW212

i am trying to solve lab3.1
this is the criteria of the lab
Using any Node.js core library and/or web framework, create an HTTP server that meets the following criteria:

• Listens on localhost
• Listens on port 3000
• Responds to HTTP GET requests to / with data from the data function as exported from the data.js
• Responds with a 404 to GET requests to any other route

i am using fastify to solve this lab and this my code for ('/') route

"use strict";
const data = require('../data');

module.exports = async (fastify, opts) => {
  fastify.get('/', async (req, reply) => {
    return await data();
  })
}

when i run node validate
i got this error

⛔️ http://localhost:3000 must respond with result calling data lib function

i added log inside the assertion
and this is the data was logged
content.toString() 3g7zncKOScl3uQ==
data u1THmSuKr7vXJg==
⛔️ http://localhost:3000 must respond with result calling data lib function

i think there is an error in the assertion.