SyntaxError: Unexpected token N in JSON at position 0 - Please help

// Problem: We need a simple way to look at a user's badge count and JavaScript points
// Solution: Use Node.js to connect to Treehouse's API to get profile information to print out

const https = require('https');

function printMessage(username, badgeCount, point){
  const message = `${username} has ${badgeCount} total badge(s) and ${point} points in javascript`;
  console.log(message);
};

function getProfile(username){             
  // Connect to the API URL (https://teamtreehouse.com/username.json)
  const request = https.get('https://teamtreehouse.com/${username}.json', response => {
    let body = "";
    // Read the data
    response.on('data', data => {
      body += data.toString();
    });

    response.on('end', () =>{
      // Parse the data
      const profile = JSON.parse(body);
      // Print the data
      printMessage(username, profile.badges.length, profile.points.JavaScript);
    });
  });
}

getProfile('chalkers');