Help me in solving JS20C problem

help
,
1

My issue

i dont know why this one is getting error

My code

// Add the code below this line
var para= document.createElement('p');
para.id='paragraph2';
para.innerHTML='Best place to learn, practice and assess myself';
document.getElementById('paragraph1').appendChild(para);

Learning course: Web development using JavaScript
Problem Link: Modify and add elements using DOM Practice Problem in Web development using JavaScript - CodeChef