Problems with sending push notifications

Good afternoon There is an iOS application that receives push notifications; for this purpose, a server part was created in node.js with Firebase cloud functions. There is a standard synchronous function for sending notifications, but it works with great loss, so we are trying to make it asynchronous, but we are faced with a problem.

Below is the code, testing on silent notifications

var allMesseges = [] const sendAllMessages = async () => { const sendMessege = allMesseges.map(async (message) => { let response = await admin.messaging().send(message); }); await Promise.all(sendMessege); };

exports.allSilentPushTrigerAsync = functions.database.ref('/development/allSilentPushTrigerAsync/').onWrite(async event=> { let snap = await db.ref("users").once("value") let users = snap.val() for (const [key, user] of Object.entries(users)) { if (user.details.pushToken) { const message = { apns: { headers: { "apns-push-type": "background", "apns-priority": "5", }, payload: { "aps" : { "content-available" : 1 }, }, }, token: user.details.pushToken, }; allMesseges.push(message) } } await sendAllMessages() })

We get an error in the logs

allSilentPushTrigerAsync pzhv27hvepg4 Error: Requested entity was not found. at Function.fromServerError (/workspace/node_modules/firebase-admin/lib/utils/error.js:254:16) at createFirebaseError (/workspace/node_modules/firebase-admin/lib/messaging/messaging-errors-internal.js:35:47) at /workspace/node_modules/firebase-admin/lib/messaging/messaging-api-request-internal.js:79:75 at processTicksAndRejections (node:internal/process/task_queues:96:5) at async /workspace/index.js:180:28 at async Promise.all (index 4) at async sendAllMessages (/workspace/index.js:182:9) at async /workspace/index.js:207:10

at async /workspace/index.js:180:28 refers to the line of code: let response = await admin.messaging().send(message);

at async /workspace/index.js:207:10 refers to the line of code: await sendAllMessages()

Please tell me what the problem is.