OAuthExceptionaaaaa:  Unexpected result from the server "https://uspdigital.usp.br/wsusuario/oauth/request_token" (500) while requesting a request tokenobject(OAuthException2)#3 (7) {
  ["message":protected]=>
  string(130) "Unexpected result from the server "https://uspdigital.usp.br/wsusuario/oauth/request_token" (500) while requesting a request token"
  ["string":"Exception":private]=>
  string(0) ""
  ["code":protected]=>
  int(0)
  ["file":protected]=>
  string(69) "/web/dominios/sispesquisa.fmrp.usp.br/site/library/OAuthRequester.php"
  ["line":protected]=>
  int(169)
  ["trace":"Exception":private]=>
  array(2) {
    [0]=>
    array(5) {
      ["file"]=>
      string(54) "/web/dominios/sispesquisa.fmrp.usp.br/site/uspauth.php"
      ["line"]=>
      int(78)
      ["function"]=>
      string(19) "requestRequestToken"
      ["class"]=>
      string(14) "OAuthRequester"
      ["type"]=>
      string(2) "::"
    }
    [1]=>
    array(4) {
      ["file"]=>
      string(54) "/web/dominios/sispesquisa.fmrp.usp.br/site/require.php"
      ["line"]=>
      int(12)
      ["args"]=>
      array(1) {
        [0]=>
        string(54) "/web/dominios/sispesquisa.fmrp.usp.br/site/uspauth.php"
      }
      ["function"]=>
      string(7) "include"
    }
  }
  ["previous":"Exception":private]=>
  NULL
}


                <script language=JavaScript>
                        function login() {
                                window.location.href='uspauth.php';
                        }
                </script>