Why is 'message' in PrintError console.error(error.message) undefined?

// 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');

//Print Error Messages
function printError(error) {
    console.error(error.message);
}

try {
  //Print message to console
  function printMessage(username, badgeCount, points) {
     const message = `${username} has ${badgeCount} total badge(s) and ${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', () => {
        try {
          //Parse the data
          const profile = JSON.parse(body);

          //Print out the data
          printMessage(username, profile.badges.length, profile.points.JavaScript);

          } catch (error) {
              printError(error);
            }
          })

    request.on('error', printError());
        })
    }
} catch(error) {
  printError(error);
}


const users = process.argv.slice(2);
users.forEach(getProfile);