"Socket hang up" error

Hey there! I’m trying to make a Kahoot bot and suddenly I’m getting this error:

request error: Error: socket hang up
at createHangUpError (_http_client.js:335:17)
at TLSSocket.socketOnEnd (_http_client.js:436:23)
at TLSSocket.emit (events.js:201:15)
at endReadableNT (_stream_readable.js:1130:12)
at processTicksAndRejections (internal/process/task_queues.js:83:17) {
code: 'ECONNRESET'
}

This is my code (Some of it is from the example from Glitch):

const path = require("path");

// Require the fastify framework and instantiate it
const fastify = require("fastify")({
  // Set this to true for detailed logging:
  logger: false
});

// ADD FAVORITES ARRAY VARIABLE FROM README HERE


// Setup our static files
fastify.register(require("fastify-static"), {
  root: path.join(__dirname, "public"),
  prefix: "/" // optional: default '/'
});

// fastify-formbody lets us parse incoming forms
fastify.register(require("fastify-formbody"));

// point-of-view is a templating manager for fastify
fastify.register(require("point-of-view"), {
  engine: {
    handlebars: require("handlebars")
  }
});

// Load and parse SEO data
const seo = require("./src/seo.json");
if (seo.url === "glitch-default") {
  seo.url = `https://${process.env.PROJECT_DOMAIN}.glitch.me`;
}

// Our home page route, this returns src/pages/index.hbs with data built into it
fastify.get("/", function(request, reply) {
  // params is an object we'll pass to our handlebars template
  let params = { seo: seo };
  
  // The Handlebars code will be able to access the parameter values and build them into the page
  reply.view("/src/pages/index.hbs", params);
});

// Run the server and report out to the logs
fastify.listen(process.env.PORT, function(err, address) {
  if (err) {
    fastify.log.error(err);
    process.exit(1);
  }
  console.log(`Your app is listening on ${address}`);
  fastify.log.info(`server listening on ${address}`);
});

// Pressed the button
fastify.post("/", function(request, reply) {
  const Kahoot = require("kahoot.js"); 
  const client = new Kahoot;
  
  console.log("Logging in...")
  client.join(request.body.pin, "Bot");
  
  client.on("joined", () => {
    console.log("I joined the Kahoot!");
  });
  
  client.on("quizStart", () => {
    console.log("The quiz has started!");
  });

  client.on("quizEnd", () => {
    console.log("The quiz has ended.");
  });

  client.on("questionStart", question => {
    console.log(question)

    const choices = client.quiz.questions[question.questionIndex].choices;

    for (let i in question.choices) {
      if(question.choices[i].correct) {
        var answer = i;
        break;
      }
    }

    question.answer(answer);
  });
});

Also, the Kahoot bot doesn’t join the game for some reason. I think it’s because of this error. Sorry if I’m making a stupid mistake I just don’t really know these kinds of stuff.