title: Spring social Authorisation Exception with Facebook
body: <p>My website has suddenly started reporting this error when ever anyone logs in with Facebook:</p>
  
  <blockquote>
    <p><strong>HTTP Status 500 - Authorization is required for the operation, but the
    API binding was created without authorization.</strong></p>
    
    <p><strong>type</strong> Exception report</p>
    
    <p><strong>message</strong> Authorization is required for the operation, but the API
    binding was created without authorization.</p>
    
    <p><strong>description</strong> The server encountered an internal error that prevented it
    from fulfilling this request.</p>
    
    <p><strong>exception</strong> org.springframework.social.MissingAuthorizationException:
    Authorization is required for the operation, but the API binding was
    created without authorization.</p>
  </blockquote>
  
  <p>I have not changed anything relating to Facebook logging in recently, so why might my website be suddenly giving this error?</p>