this.getOpenerEventChannel is not a function

[289266700]

opener: Taro.navigateTo({
url: ../caughtReason/index?type=${type},
events: {
acceptDataFromOpenedPage: function(data) {
console.log(data)
},
}
})
opened: handleSave = () => {
const eventChannel = this.getOpenerEventChannel()
}
this.getOpenerEventChannel is not a function

[TeddyMa]

this.$scope.getOpenerEventChannel()