title: Python comes up with an error in the end the error says KeyError 'Open'
body: <p>I am trying to extract stock prices from the website 'iex' and everything works fine until I try to plot my data into a visualization model. Can anyone take a look and see what I am doing wrong? This happens when I put the coding for 'open' as well as 'volume' Thank you!</p>
  
  <pre><code>msft['Open'].plot(label='MSFT',figsize=(16,8),title='Open Title')
  gm['Open'].plot(label='gm')
  ford['Open'].plot(label='ford')plt.legend()
  </code></pre>
  
  <p>I get the follow error</p>
  
  <pre><code>KeyError: 'Open'
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/b6bZD.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/b6bZD.jpg" alt="This is the Error I receive when coding"></a></p>