title: Okta api invalid request
body: <p>I'm trying to fit the Okta Asp.NET Core Mvc example (<a href="https://github.com/oktadeveloper/okta-aspnetcore-mvc-example" rel="nofollow noreferrer">https://github.com/oktadeveloper/okta-aspnetcore-mvc-example</a>) into my React Asp.Net Core app.  (The reason I'm not using Okta's React example is that it uses Babel and my VS2017 React project uses Typescript.)  The Mvc example runs fine against my Okta account, and my React app compiles and runs w the Okta SDK and other code copied from the Mvc example, but I can't get it to authenticate.  </p>
  
  <p>Okta returns an http 400: Identity Provider: unknown, Error Code: invalid request, Description: the 'redirect_uri' parameter must be an absolute Uri that is whitelisted in the client app settings.</p>
  
  <p>All I've done is add [authorize] attribs to my controller and a button that requests account/login. Both actions return the same error.  I do have the app Url in my Okta app settings. </p>