Get the checkbox value in node.js

I want to access the checkbox value form request.body in node.js. I tried logging it but the console says 'undefined.'

HTML

 <label>
       <input name='sell' type='checkbox' value='false' />I want to sell this photo.
 </label>

Node.js

   const { title, description, category, sell } = req.body;
   console.log(req.body);
   console.log(sell);

The other data from the request body is being logged out but the checkbox (sell) is undefined. I cannot figure out what is wrong..