在云后台的全局设置中添加了一个云函数作为消息推送函数，事件类型是user_enter_tempsession，配置如下图： [图片] 但是 在进入客服消息的时候触发云函数，但是后台日志显示调用出错，错误如下： 日志内容 Request ID: ab03a697-fc80-11e9-88ad-525400697544 执行时间: 223.5ms内存使用: 22.77 MB 返回结果 {"errorCode":1,"errorMessage":"user code exception caught","stackTrace":"errCode: 45015  | errMsg: openapi.customerServiceMessage.send:fail response out of time limit or subscription is canceled hint: [MObbNA05168672]"} 日志 START RequestId: ab03a697-fc80-11e9-88ad-525400697544 Event RequestId: ab03a697-fc80-11e9-88ad-525400697544 Error: errCode: 45015  | errMsg: openapi.customerServiceMessage.send:fail response out of time limit or subscription is canceled hint: [MObbNA05168672] at new CloudSDKError (/var/user/node_modules/wx-server-sdk/index.js:6366:28) at /var/user/node_modules/wx-server-sdk/index.js:2529:43 at step (/var/user/node_modules/tslib/tslib.js:136:27) at Object.next (/var/user/node_modules/tslib/tslib.js:117:57) at fulfilled (/var/user/node_modules/tslib/tslib.js:107:62) at <anonymous> at process._tickCallback (internal/process/next_tick.js:188:7) END RequestId: ab03a697-fc80-11e9-88ad-525400697544 Report RequestId: ab03a697-fc80-11e9-88ad-525400697544 Duration:223ms Memory:256MB MaxMemoryUsed:22.773438MB 请问这种错误如何处理