php - 使用 facebook php sdk 登录

Question

我正在使用Facebook PHP SDK进行身份验证，我收到以下消息：

{
    "error": {
        "message": "Error validating verification code. Please make sure
                  your redirect_uri is identical to the one you used in 
                  the OAuth dialog request",
        "type": "OAuthException",
        "code": 100
    }
}