why messaging().sendtodevice is not working sometimes?

I'm using the following code to send a notification from one device to another using FCM. Everything works fine until before return admin.messaging().sendToDevice(...). The 'Token ID: ' log displays token ID of the receiver, but when I set the variable token_id to the sendToDevice function, the notification is not called, therefore the notification is not sent. Can someone tell me what's wrong?

var firebase = require("firebase-admin");
var serviceAccount = require("./julla-tutorial.json");

  console.log("enter in then Firebase Api");
  const firebaseToken = [
    'e0T6j1AiRjaa7IXweJniJq:APA91bHNznSHSIey08s-C-c3gchci6wepvhP1QxQyYbmZ8LySI3wnu64iW7Q23GhA6VCdc4yodZoCFOgynfAb5C8O8VE81OcSv_LL-K3ET1IKGZ_6h35n-_q5EKFtfJWlzOqZr4IvpiB',
    'dNWnSqyCQbufzv1JutNEWr:APA91bFcI9FDyRxHRBEcdw4791X0e-V0k1FjXcSstUA67l94hSojMRCd6LWr2b57azNEt3z_XLwLljMX4u2mc9cZDrAVm55Mw9CHGyue-09KofWnnHNR9XWBibc4T76xOV_DWX7T2RvW',
    'cq65rtuaTCKGk5lHk7UabN:APA91bFR3kAArg6lhuBq7ktNuBk7Z9MXXk3PskqhYa8CgNaEl6MX4TQ5lo35d6XhnCQ4fEkCkyZ_j08evxE9Y4oVCRTEdqsrkccCVTE8Di47lfmDR3i1NdoL3re9oLw6F_uNsnvRoQcq'
  ]
  firebase.initializeApp({
    credential: firebase.credential.cert(serviceAccount)
  })     
  const payload = {
    notification: {
      title: 'Demo 2345',
      body: 'dfghj',
      sound: 'default',
      color: 'yellow',
      android_channel_id: 'default',
      channel_id: 'default'
    },
    data: { id: 'broadcast', channelId: 'default' }
  }
  const options = {
    priority: 'high',
    timeToLive: 60 * 60 * 24, // 1 day
  };
  console.log('------payload---',payload);
  console.log('-----TOKEN_Array----',firebaseToken);
  console.log('-------options-----',options);
  firebase.messaging().sendToDevice(firebaseToken, payload, options).then(function (response) {
console.log('--------response',response);
   
  }) .catch(function (error) {
      console.log('-------rejet',reject);      
    });