Im getting the following error while trying to authenticate with LinkedIn.
"Invalid redirect URI"

The link is valid and registered with my app inside the linked in developer site.

What could cause this error? 

```
  var auth = new OAuth2Authenticator
  (
     clientId: "MYID",
     scope: "r_basicprofile",
     authorizeUrl: new Uri("https://www.linkedin.com/uas/oauth2/authorization?response_type=code&client_id=MYID&redirect_uri=https://wicareerpathways.org/&state=987654321&scope=r_basicprofile"),              
     redirectUrl: new Uri("https://wicareerpathways.org/")
  );

```