Firebase函数-TypeError：无法读取未定义的属性“ parent”

Question

我想向用户发送通知，但给我错误。

    const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp();

exports.pushFollowRequest=functions.database.ref("/users/{my_uid}/followrequestkeys/{other_uid}").onWrite(data=>{
  const myuid = data.params.my_uid;
  const otheruid=data.params.other_uid;

});

我该如何解决？