Firebase Cloud Function not executing - firebase

Question

I'm working on the group functionality of my app where members of the group can add task to a group that they are currently working on. So, when a task is added I want to notify all members using FCM that a task had been added to the group.
EDIT:
The code to add the task to a group is run on the client and works successfully. The purpose of the cloud function is just to send cloud messages to all the members of the group that a task has been added by a particular member.
This is my logic for the cloud function :
1st. As a task can be added to multiple groups at a time I'm using a forEach().
2nd. I'm fetching the uids of the Members in the groups and pushing them into an array(uids) so that later I can retrieve their fcmTokens.
3rd. Running a forEach on the uids to retrieve the fcmTokens.
4th.Sending Cloud message to devices.
But the cloud function doesn't execute as expected.
This my cloud function:
exports.newTaskAdded = functions.https.onCall(async (data, context) => {
const groups = data.groups; //Can be multiple groups hence an array.
const uid = data.uid;
const author = data.author;
const taskId = data.taskId;
const taskTitle = data.taskTitle;
try {
groups.forEach(async group => {
const groupName = group.groupName;
console.log('groupName: ', groupName);
const groupId = groups.groupId;
const membersPromises = [];
membersPromises.push(
admin
.firestore()
.collection('Groups')
.doc(`${groupId}`)
.collection('Members') //Members collection has document for each user with their uid as the document name.
.get(),
);
console.log('memberPromises: ', membersPromises);//Function stops after this.
const membersSnapshot = await Promise.all(membersPromises);
console.log('membersSnapshots', membersSnapshot);
const uids = [];
membersSnapshot.forEach(doc => {
doc.forEach(snap => {
console.log(snap.id);
uids.push(snap.id);
});
});
console.log(uids);
const uidPromises = [];
uids.forEach(uid => {
uidPromises.push(
admin
.firestore()
.collection('Users')
.doc(`${uid}`)
.get(),
);
});
console.log('uidPromises: ', uidPromises);
const tokensSnapshots = await Promise.all(uidPromises);
const notifPromises = [];
tokensSnapshots.forEach(snap => {
console.log(snap.data());
const token = Object.keys(snap.data().fcmTokens);
const payload = {
notification: {
title: `${author} has added a new task to ${groupName}`,
body: `Task Added: ${taskTitle}`,
sound: 'default',
},
};
notifPromises.push(admin.messaging().sendToDevice(token, payload));
});
await Promise.all(notifPromises);
});
} catch (err) {
console.log(err);
}
return {result: 'OK'};
});
This is my log:
As you can see there is no error shown.
Help would be very much appreciated. Thank you