title: While trying to change placeholder text, fatal error: unexpectedly found nil while unwrapping an Optional value
body: <p>I am trying to modify the placeholder text of a text field in Swift. However there is an error about "fatal error: unexpectedly found nil while unwrapping an Optional value." I am not sure why this would be nil. </p>
  
  <p><img src="https://i.stack.imgur.com/2Su79.png" alt="enter image description here"></p>
  
  <p>Thanks!</p>