Typescript 更新时控制台日志错误，Firebase控制台

我在firebase控制台中部署了Typescript中的此函数：

import * as functions from 'firebase-functions'
import * as admin from 'firebase-admin'

admin.initializeApp()


export const onEditModeUpdate = 
functions.firestore.document("Settings/ShiftsEditMode").onUpdate(change => { 
    if (change.after) {
        const after = change.after.data();
        const payload = {
            data: {
                temp: String(after.temp),
                conditions: String(after.conditions)
        }
    }
    return admin.messaging().sendToTopic("Settings/ShiftsEditMode", payload)
}
else {
    return null;
}
})

部署是正确的，但当我更改数据时，控制台日志中出现错误：

Error: Topic provided to sendToTopic() must be a string which matches the format "/topics/[a-zA-Z0-9-_.~%]+".
at FirebaseMessagingError.Error (native)
at FirebaseMessagingError.FirebaseError [as constructor] (/user_code/node_modules/firebase-admin/lib/utils/error.js:42:28)
at FirebaseMessagingError.PrefixedFirebaseError [as constructor] (/user_code/node_modules/firebase-admin/lib/utils/error.js:88:28)
at new FirebaseMessagingError (/user_code/node_modules/firebase-admin/lib/utils/error.js:253:16)
at Messaging.validateTopic (/user_code/node_modules/firebase-admin/lib/messaging/messaging.js:964:19)
at /user_code/node_modules/firebase-admin/lib/messaging/messaging.js:650:19
at process._tickDomainCallback (internal/process/next_tick.js:135:7)

---

任何关于我做错了什么的建议，请仔细阅读错误消息：

错误：提供给sendToTopic（）的主题必须是与格式“/topics/[a-zA-Z0-9-.~%]+”匹配的字符串

---

您提供的字符串“Settings/shiftseteditmode”与所需的模式不匹配。该模式表示字符串应以“/topics/”开头。字符串的其余部分是主题的名称，只能包含字母、数字、下划线、点、波浪号和百分比。您提供的字符串也与该模式不匹配，因为它包含非法斜杠。

我收到一条消息noe，意思是它正常：函数执行耗时367毫秒，状态为“正常”