ubuntu laravel5.3 Oauth 做完授权后没有数据返回

private function getUserByToken($accessToken)

{
    $heades = ['Authorization' => 'Bearer' . $accessToken];
    $request = new \GuzzleHttp\Psr7\Request('GET', 'http://192.168.254.128/api/user', $heades);
    $response = $this->http->send($request);
    dd($response);
    return json_decode((string)$response->getBody(), true);

}