Issues with Firestore Fucntions and PubSub - google-cloud-firestore

Question

I am trying to deploy a scheduled cloud function to Google Firebase, such as this
https://firebase.google.com/docs/functions/schedule-functions
Anytime I deploy the schedule as "every 1 minutes" it gets deployed fine. However, if I try to do anything else, like "every 60 minutes", "every 8 hours", I get the following error.
I am not even getting information about the error so it is hard to debug.
exports.bookingReminder = functions.pubsub.schedule('every 1 minutes').onRun((context) => {
let today = new Date()
var dateArray = []
let year = (today.getYear() - 100) + 2000
dateArray.push(year.toString())
var month = today.getMonth() + 1
if (month < 10) {
month = "0" + month.toString()
}
dateArray.push(month.toString())
var day = today.getDate()
if (day < 9) {
day = "0" + day.toString()
}
dateArray.push(day.toString())
let fullDate = dateArray.join("-")
console.log(fullDate)
const bookingsRef = admin.firestore().collection("bookings").where("date", "==", fullDate).get().then(snapshot => {
if (snapshot.empty) {
console.log('No matching documents.');
return null;
}
var emails = []
snapshot.forEach(doc => {
console.log("yes found them on this date: " + fullDate)
var booking = doc.data()
var clients = booking.clients
clients.forEach(client => {
emails.push(client.email)
})
console.log(emails);
const serviceRef = admin.firestore().collection("services").doc(booking.serviceId)
let servie = {}
const serviceSnap = serviceRef.get().then(doc2 => {
service = doc2.data()
}).then(() => {
const msg = {
//need client email
to: emails, // Change to your recipient
from: '', // Change to your verified sender
//Booking Reminder
};
console.log("running email send")
sgMail.send(msg);
})
})
return emails;
})
});