title: Kaggle Exercise: Missing Values
body: <p>I am trying to submit my solution to <a href="https://www.kaggle.com/learn/intermediate-machine-learning" rel="nofollow noreferrer">Exercise: Missing Values</a> but getting the following error after submission</p>
  
  <p>ERROR: Unable to find 1459 required key values in the 'Id' column</p>
  
  <p>ERROR: Unable to find the required key value '1461' in the 'Id' column
  .
  .
  .</p>
  
  <p>ERROR: Unable to find the required key value '1469' in the 'Id' column</p>
  
  <p>The thing is that the test dataset only has 1459 rows, from the error it seems like validation set expecting more entries? </p>