title: After successful db.collection.update always error is thrown
body: <p>Am using Node.JS to update my collection data based on a logic.
  The update happens as expected but in my console after the update it is not returning proper values. It is always returning errors. Below is the code snippet</p>
  
  <pre><code>db.collection('test').update(query,operator,options,function(err,docs){
                      if(errs) {
                          console.log('something went wrong somewhere');
                      }
  });
  </code></pre>
  
  <p>The above snippet always prints something went wrong somewhere. Does that mean that the update is not successful.</p>
  
  <p>I use MongoClient along with Node.js. </p>
  
  <p>P.S: Newbie to MongoDB learning via 10gen courses</p>