title: Clear-Site-Data header error in Chrome console
body: <p>I'm trying to implement a cache clearing button for our website that will append the Clear-Site-Data header on a specific route so we can be relatively sure that the users are getting the latest javascript, css, etc. after a release.  I'm assigning the header in my ActionMethod like so:
  <a href="https://i.stack.imgur.com/WjE2V.png" rel="noreferrer"><img src="https://i.stack.imgur.com/WjE2V.png" alt="enter image description here"></a></p>
  
  <p>According to developer tools, I'm getting the header on the client:</p>
  
  <p><a href="https://i.stack.imgur.com/Chlb5.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Chlb5.png" alt="enter image description here"></a></p>
  
  <p>So, Chrome is trying to do what I'm asking but it's throwing an error saying the types I'm passing it are unrecognized:
  <a href="https://i.stack.imgur.com/t8Iuq.png" rel="noreferrer"><img src="https://i.stack.imgur.com/t8Iuq.png" alt="console error when loading page with Clear-Site-Data header"></a></p>
  
  <p>Am I missing something with how I'm creating the header?  Is this a bug?</p>