Alexa无法给出有效回应

Question

当我尝试测试自己在Alexa上的谜语技能时，启动请求处理程序无法运行，或者至少在我在开发人员控制台上对其进行测试时执行失败，而是返回消息“存在问题要求的技能回复”

github link to view my launch handler class

下面是SkillDebugger.CaptureError日志的一部分

 "request": {
                        "type": "SessionEndedRequest",
                        "requestId": "amzn1.echo-api.request.110f8ec9-f13d-43f0-b8e3-000e3c21e586",
                        "timestamp": "2018-11-06T19:39:45Z",
                        "locale": "en-US",
                        "reason": "ERROR",
                        "error": {
                            "type": "INVALID_RESPONSE",
                            "message": "An exception occurred while dispatching the request to the skill."
                        }
                    }
                }
            },
            "invocationResponse": null,
            "metrics": {
                "skillExecutionTimeInMilliseconds": 14
            }